The XM16E1 Rifle

We have another guest post from Mr. Trey Moore of  Mooremilitaria.  Moore’s has a huge selection of  very exact reproduction Vietnam war clothing and rare camo along with original field gear and other items. He has about anything you would want if you like Vietnam war items, including PAVN and VC forces gear. Mooremilitaria is a friend of looseorunds.com and has shared his excellent article on the XM16 and M16 history. You can visit his great website and find some of the very best Vietnam  gear around. SO good most of the Vietnam war gear you see in movies and TV is from Him.

http://www.mooremilitaria.com/index.html

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Development

In 1958, the United States military evaluated two prototypes being considered as a new standard issue infantry rifle. One of the requirements identified as centrally important for the new rifle was reduced weight. A lightweight rifle would allow soldiers to carry more equipment, supplies, and ammunition. Just as the new designs were being evaluated, the U.S. Army’s Continental Army Command compiled and eventually published two combat studies from both world wars to help shape the requirements for the new rifle. One of the more compelling statistics from this study revealed that 2/3 of soldiers in combat never fired their weapons and that the vast majority of firefights occurred at close range and commenced as “surprise” encounters, especially in a tropical environments. Assuming that the low-intensity conflict South East Asia would continue to escalate, the Continental Army Command recognized that a lightweight rifle firing a small caliber, high velocity cartridge would be the ideal weapon for the coming jungle war. Of the two prototypes submitted to the U.S. Army’s Infantry Board for evaluation, the ArmaLite AR15, which was based on an earlier design by Eugene M. Stoner stood out early on as the better gun.

Weapons Testing and Reception

In 1961, General Curtis Emerson LeMay is made the fifth Chief of Staff of the United States Air Force and, shortly thereafter, he placed an order for 80,000 AR15′s for U.S. Air Force security forces. However, the President John F. Kennedy’s administration refused the order on the grounds that it the logistical challenges associated with having two different rifle calibers – 7.62x51mm and 5.56x45mm – in use by the U.S. military at the same time would be too great. As the conflict in South East Asia continued to grow, the U.S. sent 10 AR15s to Vietnam for testing and evaluation in early 1962. Soldiers using the AR15 quickly praised the rifle’s effectiveness in combat. In response, the US sent more rifles for South Vietnamese Special Forces unites. Soldiers using the weapon, again, offered unreserved praise for the stopping power of the rifle’s 5.56x45mm cartridge.

Although the AR15 received great accolade for its performance in battle, what no one knew outside of the men using it was that the wounds the rifle produced were ghastly – so much so that the photographs showing these wounds remained classified until 1980. The source of the rifle’s destructive power was not so much the 55g 5.56mm bullet it fired, but the pitch of the rifle’s barrel’s rifling.  The 1 in 14 twist rate of the rifling produced sufficient ballistic stability to get the bullet to a target, but on impact with that target, the bullet tended to tumble end over end. Although the 1 in 14 twist rifling produced devastating lethality, it did not produce satisfactory accuracy in cold temperatures. In July of 1963, Secretary McNamara approved the Air Force’s request to change the rifling twist to 1 in 12. The main theory being that the increased probability of a hit outweighed the higher chance of a kill resulting from that hit

 

Final Stages of Development: M16 vs XM16E1

As the shortcomings of the M14 rifle’s design became more thoroughly understood, more attention was shifted to the new AR15 rifle. The Kennedy Administration and other officials began to push for a “modern” rifle and the AR15 provided the clear answer. With the change to the 1 in 12 twist rate having been already made, the U.S. Air Force’s plans to adopt the AR15 began to move forward swiftly. The Army however, was still dragging its feet and looking for ways to challenge the adoption of the new rifle. The Army insisted on the installation of a bolt closure device so that the troops would have the ability to manually close the bolt on a rifle in the event of a malfunction.  Manual bolt closure had been a part of the design of every U.S. service rifle since the M1903 Springfield, and the Army was not about to give up on it now. Both the Air Force and Eugene Stoner insisted that the rifle did not require a bolt closure device and pointed out that there had been no failures in testing that would have been remedied by the addition of the device. The Air Force stood fast on the fact that the bolt closure device was unneeded while the Marine Corps and Navy sided with the Army in recognition of the device being potentially useful.

By October of 1963, U.S. Secretary of Defense Robert Strange McNamara had no choice but to recognize that the service branches would not all agree on the change and that there would not be a single model of the rifle. Soon thereafter, Contract 508, which was valued at $13.5 million, was issued to Colt on November 4, 1963. The contract was for 104,000 rifles. 85,000 rifles with the bolt closure device (forward assist) would be for delivery to the U.S. Army and U.S. Marine Corps. These were designated XM16E1 rifle (Experimental M16, change one – the addition of the forward assist). The remaining 19,000 rifles would be delivered to the Air Force and did not have the bolt closure device. They were designated as the M16. The only difference between the two models was the the bolt closure device, and the roll marked name designation on the receiver. Delivery of these rifles began in March of 1964.

The Army’s rifles were delivered to elite units including Special Forces, the 101st Airborne Division, the 82nd Airborne Division and the newly formed 1st Cavalry Division. Early use in Vietnam and the 82nd Airborne Division’s use of the weapon in the Dominican Republic indicated that the design was a great success. In July 1965, General Westmoreland asked that a logistical study be conducted to evaluate the possibility of expanding the adoption of the new rifle to such an extent that it would be issued to every U.S. serviceman in Vietnam. In the Fall he advocated ordering 100,000 new rifles. The low recoil, light weight, and impressive rate of fire of the 5.56mm XM16E1 was perfect for the jungles of Vietnam. However, the quick success and immediate need for more rifles would soon lead to problems.

Mistakes and Casualties

With an increase in demand for rifles came an increase in demand for ammunition, which would ultimately cause a series of notorious failures that would plague the M16′s reputation for decades to come. Ammunition manufacturers were struggling with the requirements specified by the technical data package for the M193 cartridge (the official designation for the M16′s 5.56mm ammunition). High gas port pressures, chamber pressures, and cyclic rates of fire, along with arguments over the bullet’s shape initially led all approved ammunition manufacturers to decline bidding on the contract. However, an agreement was eventually reached and DuPont produced CR8136 powder (commonly referred to as stick or tube) and Olin Mathieson produced WC846 powder (commonly referred to as ball powder). This initially satisfied the Army by keeping with the concept of having two approved yet different powders to compensate for shortages, manufacturing problems, etc. However, in reality, DuPont could not meet consistent pressure measurements for the ammunition which resulted in the first 18 months of ammunition production using the WC846 powder almost exclusively.

By September of 1965 evidence and testing clearly indicated that the WC846 powder caused a higher cyclic rate and was more prone to fouling. In fact, the 15th Memo Report on the XM16E1 system stated “the control propellant, WC846 though otherwise satisfactory, does produce quantities of fouling…sufficient to affect weapon function if the weapon is not cleaned after firing a maximum or 1,000 cartridges… that [Olin] be encouraged to modify their propellant.” However, the rifle continued to fair well in Vietnam, primarily as a result of the training that soldiers in elite units had received.

In the summer of 1966, the new rifle began replacing the M14 in all U.S. Army combat arms units – soon, “everyone” would have the XM16E1 rifle. Many units received them in-country with very little attention paid to training the soldier on the care and maintenance of the new rifle. A shortage of cleaning kits, a total lack of a chamber brush, shortcomings in training, and ammunition that created fouling problems soon led to failures in combat that ultimately resulted in a Congressional Investigation, the Ichord Committee, in 1967.

By late 1966/early 1967, chamber brushes, bore brushes, and a swab holder for the new 4 piece cleaning rod were on order. Maintenance cards were printed and circulated to help instruct soldiers on the care of their new rifle. While necessary, it would still take months to get these items into the field. In the late 60′s, the Army turned to artist Will Eisner of Mad Magazine to help illustrate maintenance comics. Anything that could be done to help a soldier care for his rifle would be done.

 

Front_cover_-_the_M16A1_Rifle_-_Operation_and_Preventive_Maintenance_art_by_Will_Eisner

Revisions and a New Generation

The XM16E1 rifle had many small changes during its development, but there were 10 primary engineering changes that took place before the reclassification of the rifle as “Standard A” and its eventual designation as the M16A1 in February of 1967. The gas tube, buffer, bolt hardness, bolt carrier key finish, firing pin retainer, bolt catch, disconnector, and flashider were all modified, and a raised fence area was added around the magazine release to help prevent hitting the release unintentionally. A chrome plated chamber would eventually be added to the revision list in May of 1967.

While these changes enhanced the rifle’s performance and reliability in the field, they did not address the heart of the issue. The “failure to eject” stoppages were primarily being caused by the change in powder type from a stick propellant, to ball propellant. This switch achieved the desired muzzle velocity of 3,300fps, but it increased the cyclic rate of fire from 850 rounds per minute to 1,000 rounds. This caused poor case extraction as a result of prematurely opening the bolt, and it increased fouling in the rifle in both the gas system and chamber. The main culprit, the ball propellant, would not have its formula adjusted and re-designated as WC844 until January of 1970.

M16A1_brimob

With design improvements, a chrome chamber, reformulated powder, and proper training for soldiers in the field on the use and maintenance of the rifle, reliability improved quickly – as did morale. A testament to the legacy of the M16 series if the M16A4 currently in use the U.S. Marine Corps and the M4 Carbine in use by the US Army. 50 years after is adoption by the U.S. Military, the M16 family is still soldiering on as the longest serving US rifle.

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Colt 6945 & the Geissele Super 3 Gun trigger

I bought a Colt 6945.  Why?  Because I wanted one.  Good enough reason for me.

Colt 6945

 

I ordered the rifle Feburary from Gun Gallery.  In September the tax stamp finally came back from the ATF and I picked it up.  The staff at Gun Gallery were friendly and helpful, so I would purchase from them again.

The Colt 6945 is a short barreled rifle (SBR) version of the Colt 6940.  This rifles 10.3 inch barrel is the main difference from the standard 6940, and is why it is a title II firearm which required me to pay a $200 dollar tax stamp to get it.

The 6940 series of rifles have a monolithic upper with a removable bottom rail.  The barrel uses a proprietary barrel extension and gas tube.  Shawn and others have reported that their 6940s have superb accuracy due to these changes.  Personally I don’t plan to try and use this as a precision rifle, so its no difference to me.

The best thing about a short barreled AR15 is the pure modularity of it.  I can easily swap upper for various barrel lengths and calibers.

2014-09-21 12.01.11

 

So I really like my 6945.

Colt 6945

 

Since getting it I have run six different uppers on it.  That is one of the great things about a SBR AR15 is the ability to easily change the uppers for difference barrel lengths and calibers.  I also swapped out the stock trigger for a Geissele Super 3 Gun trigger.

I have several Geissele SSA triggers and I highly recommend them.  I wanted to try the Super 3 Gun (S3G) trigger, so I picked one up a while back.  First it was installed in a LMT lower, where it would often double & rarely fail to reset after a shot was fired.  So it was quickly removed from that lower(I have had other issues with that lower before).  When the got the Colt, I went and tried the S3G trigger in it.  Now in the Colt, the S3G trigger worked fine when shooting offhand or from the bench.  However due to the very short reset, when I was firing from a bipod I experienced unintentional doubles.  This trigger might be great for someone who wants to bump fire, but the reset is a little too short for me.  I wouldn’t recommend the S3G for any serious fighting rifles, but I do recommend the Geissele SSA and the Colt 6945 as they are awesome.

Front Range Survival Fire Starting Rod Review

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A few weeks ago we got contacted via our facebook page by Front Range Survival about their products.  http://www.frontrangesurvival.com/

A few days later I got an item from them to test out and review.  As you can see in the picture of above it is is a fire starting fire rod. The handle/lanyard if 14 feet of military grade parachute chord in hunter orange for ease of locating it once you drop it in the grass. Or, if you need to make a shelter, signal help or first aid use in case of things turning really bad.

I and a friend spent the last few weeks working with this thing and it is the best one of these we have ever used. We have looked at fire starting rods and kits over the years and had a lot of frustration and failure with kits that are supposed to be the best.  Not with this one. It sparks immediately and the sparks are large and hot.  The first time we went to use it I crumpled up some dry leaves and some very lightly damp grass. It took three swipes of the knife on this thing and we had a very good flame going that we turned into a fire in no time. It was a cool damp day with a little wind, but the sparks from this thing got the job done.  It is really impressive.

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I use the tool with the USGI knife I also threaded with a lanyard. The flat screw driver “blade” made it fast and easy and the two can be wrapped up together.

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the Front Range tool is seen here with the utter failure that is the Bear Grylls fire starting tool kit.  I have seen Mr. Grylls use this kit on TV many times and make it look easy. But I will tell you right now, we spent many hours in the best conditions trying to get something going with it to no avail.  It just does not compare, The sparks are tiny and pathetic. It looks good and is a great idea in theory but it just does not hold up to the FRS piece.

On the website, the company describes their thinking and the tools as  follows.

“We set out to make the best survival gear on earth. Everything we carry has been field tested by us.Its our gear… and now it can be yours.

Our flagship products are Fire Starters.”

They had a real winner with this tool.  I am by no means and expert survivalist, but I know quality when I had it in my hands. And when some one as clumsy as we are, can work something so fast you know it is good.   As my friend says. this is the kind of quality tool that makes a person get excited and want to practice their field and bush craft more often. I agree with that statement absolutely.  Everyone who tried the fire starter was instantly impressed and wanted one,  Not many people I personally know has tried one of these that works as well.

After talking about the tool for a while we determined a nice little kit to put together with it for signaling and making fire while on a hike or for whatever reason.

We gathered some things together and found a spare MOLLE GP pouch it would all fit in and leave room for more as we deemed might be needed  and of course we can remove or add to as the situation may dictate. The idea being to have one on you, in a pack or left in your vehicle.   The pouch as seen above comes with the knife with lanyard. The FRS fire started and some cotton and dryer lint ( which with the FRS tool makes fire as fast as a lighter) A signal mirror and a Military pilots cloth signal panel.  Some medical gear and of course a lighter or two will be added as well as some other odds and ends. But this is a good starts so far in our minds.

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The Front Range Survival fire rod is heavy duty and the pictures don’t seem to show just how big it is. It is not huge or unhandy but you get enough to do the job. It will last a long time.

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I wrapped it up in a sealed bag with some material to help with the fire and cinched it with a rubber band. This will let it easily fit in a single AR15 mag pouch and still have some room left over.  You can store one about anywhere.

A lot of people are always looking for more effective survival and outdoors tools. This is certainly a winner in my opinion, If you do anything or go anywhere you may find you need a fire, this thing is worth having. I would not go on an over night hunt without one of these now.  If you want one, the link to the amazon page is below. You can also read the reviews from buyers there as well.

http://www.amazon.com/Firesteel-Emergency-Survival-Paracord-Necklace/dp/B00KY7901E/ref=sr_1_3?ie=UTF8&qid=undefined&sr=8-3&keywords=firesteel+orange

 

 

Crusader Weaponry Broadsword .308 Rifle

Several months ago I had the opportunity to meet Joe Chetwood, owner of Crusader Weaponry (crusaderweaponry.com). He had moved into my neighborhood and as we both have a passion for firearms, we naturally ended up meeting each other. I met with Joe at his home on several occasions to talk about the Broadsword and Crusader Weaponry products. One thing led to another and I was soon in possession of the Crusader Weaponry Broadsword .308/7.62 Carbine.  From the second you hear Crusader Weaponry’s name, see the Crusader Shield marking etched on the side of the Broadsword, you feel like the paladin of old. The Broadsword channels an era when knights wielded the broadsword, to strike powerful blows to the enemies of righteousness and honor. As I spent time with the Broadsword, I found it to be the modern day, hard hitting, dispenser of .308 justice it was built to be.

Crusader Weaponry Broadsword
Crusader Weaponry Broadsword
Sighting In the Broadsword
Sighting In the Broadsword

Specs / Accessories:

The Broadsword is an AR10 type direct impingent carbine chambered in .308/7.62mm. The Broadsword I was given came equipped with:

  • Apex free-float rail system
  • Diamondhead Back-UP iron sights (front & Rear)
  • BattleComp compensator
  • Battle Arms Development ambidextrous safety selector
  • Bravo Company 7.62 Gunfighter Charging Handle
  • Magpul MAID grip
  • Magpul Utility Battle Rifle (UBR) stock
  • Two Magpul PMAG 20 round 7.62/308 magazines
  • Hard Rifle Case

The upper and lower receivers are a 7075-T6 billet aluminum match set from SI Defense. The upper picatinny rail has engraved “T” mark numbers. I found there was absolutely no play between the upper and lower. The barrel is an 18 inch, 416R match grade stainless steel barrel, with 1/11 twist polygonal rifling.

Apex free-float rail system
Apex free-float rail system
BattleComp Compensator
BattleComp Compensator
Battle Arms Development ambi safety selector
Battle Arms Development ambi safety selector
BCG / Gas Key Staking
BCG / Gas Key Staking
Diamondhead Iron Sights
Diamondhead Iron Sights

The upper & lower receivers of the Broadsword are finished in Cerakote Sniper Gray, as well as the barrel. The bolt carrier group and the inside of the upper receiver are treated with Crusader Weaponry’s proprietary Slipstream dry film weapons lube. The dry film lubricant is applied at 150-200 psi, permanently imbedding the dry lubricate to those surfaces it is applied to. The trigger group, charging handle, buffer, and buffer spring can also be treated with Slipstream by choosing different packages offered by Crusader Weaponry.

7075-T6 Billet Match Set Receivers
7075-T6 Billet Match Set Receivers
7075-T6 Billet Match Set Receivers
7075-T6 Billet Match Set Receivers

After spending time with the Broadsword I would change out a few features, like the stock, grip and the rail system, but those are just because of my personal preference. Since Crusader Weaponry is building these custom rifles per individual order, you can get whatever grip, stock or accessories you would prefer. While visiting Crusader Weaponry’s shop, I noticed several Broadsword builds in progress and these rifles had individual requests for different accessories on each rifle.

Field Striping:

The Broadsword brakes down just like an AR-15. If you are running a 5.56mm AR-15, the Broadsword will be very familiar. It just has bigger internal parts. Cleaning and maintenance of the bolt carrier group, charging handle, upper receiver, chamber and barrel are extremely familiar, if not identical to your 5.56mm AR15.  The only thing you will need to add to your cleaning kit is a 308 chamber brush and bore brush. Once field stripped and cleaned, I applied some of Crusader Weaponry’s proprietary Slipstream STYX lubricant to the Broadswords.

Field Stripped
Field Stripped
Bolt Carrier Group / Charging Handle
Bolt Carrier Group / Charging Handle

Performance/Reliability:

I used a couple of Aimpoint Micro’s and an Aimpoint PRO on the Broadsword. The Broadsword is a lot more accurate than I am and I have seen it fired for accuracy with a magnified optic. A few weeks ago I was able to fire another Broadsword with a 1X4 adjustable scope and found this to be a nice combination.  I am not going into formal, measured, MOA accuracy on the Broadsword. I ran the Broadsword like a battle rifle from CQB out to 100 yards. I ran it like a beefed up patrol rifle and as I said before, the Broadsword is a lot more accurate than I am capable of making it. While sighting in the Broadsword, on different optics, I was fully satisfied with 100 yard groups. With some of the OTM match ammo I was right on top of the previous rounds I fired. Once I got it sighted in, I was off to the races running the Broadsword hard.

The trigger felt very close to a standard mil-spec trigger. It had a slightly crisper break than a mil-spec trigger, but there was nothing special about it. It did not affect long range shots but felt very familiar  when running it like a patrol rifle. Once again, the trigger group is an area that can easily be upgraded if you want.

The Broadsword is an absolute blast to shoot. For a larger heavier carbine in 308, it has rather natural pointability, very similar to a 5.56mm AR15. I have spent over three months with the Broadsword firing various brands and loads of ammunition through it. I fire close to 1000 rounds of 308 through the Broadsword. I know this particular rifle has been reviewed by several notable industry members and recently was in Special Weapons for Military & Law Enforcement Magazine. This particular Broadsword was very dirty and well used when I got it. The Broadsword never failed during my time with it. It literally chewed its way through everything I put into it. With every thump of 308 fired and with every magazine exchange, the Broadsword just kept going. I even switched back and forth from cheap steel case Monarch to Federal Premium without a stoppage. I found the Broadsword really liked Federal Sierra Match King in 168 grn and 175 grn. I got the best results accuracy wise with this ammo. I found the action to be very smooth. The bolt carrier slid back and forth smoothly even when gritty, dry and hot from prolonged use. After the Slipstream STYX had started to burn off, the Broadsword still ran very smoothly.

Target Results
Target Results

Now, the Broadsword is a beast, although it looks slick and sexy it has some weight to it. Nothing a few pushups and exercising won’t fix. It’s nothing you can’t handle but after spending a full day with it, you will know that you have been carrying it around. Although it has weight to it, it is balanced very well. I was able to rack the Gunfighter charging handle with my support hand and change magazines with ease, while holding the Broadsword up with my fire control hand.  The weight does dampen down the recoil making the Broadsword smooth and very enjoyable to shoot. Some weight could be shaved off by changing out some of the features on the Broadsword but you will be sacrificing the weight for more recoil.

Broadsword w/ Aimpoint PRO
Broadsword w/ Aimpoint PRO

I found the Broadsword’s recoil was straight back into the pocket of my shoulder. The BattleComp compensator did a nice job of taming the muzzle blast and rise. Now, if you are in a spotter role next to the Broadsword, the BattleComp does nothing for you and you will get your bell rung. After long days of shooting, I found my shoulder was not beat up or feeling the repercussions of all the 308 sent down range. While dumping follow up shoots into my targets, the reacquisition of the sights and Red Dot optics was, smooth and easy to track. With the Broadsword’s features and you doing your part, hard hitting rapid follow up shots, are very easy to keep on target.

Broadsword w/ Aimpoint T1
Broadsword w/ Aimpoint T1
Crusader Weaponry Longbow
Crusader Weaponry Longbow

Conclusion:

The Broadsword does feel like the modern equivalent of the medieval knights broadsword, right down to its cold grey steel look. Finding a 308 battle rifle that runs reliably can be a challenge. Crusader Weaponry is up to this challenge and the Broadsword runs flawlessly. The Broadsword can fill several roles from a heavy patrol rifle, a designated marksman rifle, a hog hunter or anything else you can think to use it for. Crusader Weaponry has several different AR15 and AR10 rifle models available. I had a chance to test fire a Crusader Longbow precision 308, with a very nice Leupold scope mounted on it. Although I only fired a couple of rounds out of the Longbow it looks very promising. I know of only a handful of AR10 type rifles that run reliably. I would put the Crusader Weaponry Broadsword on that list.

Duncan

Info on the Canadian AR15s.

On the AR15.com forums there is some discussion about the Canadian version of the M16 family of weapons.  A poster by the name of RebelRouser posted this info in a thread about the C7 rifle.

 

Hi Steve
I apologize for not answering sooner. I‘m afraid I have been avoiding the alligators chewing on my ankles to take care of the ones feeding higher up.
To answer your questions as presented:
The effective range published does not have much to do with the barrel but is an infantry doctrine distance to do with the whole system including the man, sights, weapon ammunition and expected employment. So when you see effective range, it is almost always a subjective assessment of the system capability derived by the user instructor (CTC) and rifle requirements office (DLR), usually before the weapon is even bought. In the case of the C7 it included iron sights and was extended (I think) when the C79 sight and the C7A1 came along. The reference to the rifles origins (M16A1E1) is in reference to the sight option first chosen by the CF. The heavy front profile, 1 turn in 7inch barrel is definitely M16A2. As is the cartridge deflector, handguards and many other changes.

Now lets talk barrels:
The C7 barrel is not the same as any M16 barrel except for the exterior profile which is M16A2. The Material is to a formula developed here in Diemaco (under Gov‘t contract) so that the entire bore and chamber configuration can be integrally formed in one operation on a rotary hammer forge. This process produces a barrel that is much stronger than the US M16A2 barrel. The bore dimensions were developed to fire C77 ammunition, (Chamber, bullet lead, diameters) the bore has dimensional reduction as the bullet moves forward (squeeze) to increase life and accuracy. The bore is plated with harder chrome than the M16. This allows greater wear life (2 to 3 times M16) and lets us machine C9 barrels from the same barrel blank. The SFW was recently tested and purchased by the UK special forces and won in competition against the Swiss SIG series rifles and the H&K G36 rifle. This barrel is now in use by the Special Forces in five countries and the US Navy Seals have expressed interest in putting them in the M4 Carbines that they have.
We have just completed a C8 Carbine upgrade program for Canada which is a new barrel with an improved chamber and stronger extractor spring assembly and a weaker ejector spring. These are the same internal configuration as our very successful SFW barrel.

Differences:
The C7 rifle and C8 Carbine is made under license with a Tech Data Package provided by Colt to the Canadian Gov‘t. Diemaco reviewed the design and made about 150 changes to the drawing package before Canadian production.  These are to numerous to mention her but include things like materials and processes as well as a different barrel configuration and manufacturing processes.

The improved handguard we designed here after CWO John Ginn kept beating the Colt version off the weapon on the parade square. You probably can‘t tell from the outside but if the you take the handguard off, you will notice two types. The improved version has two large ribs under the heat shield and three interlocking ribs on either edge as well as different material. These were introduced late in the program so they had to be interchangable and be a good match with the old handguard.

Another change you may notice is the small diameter front sight post that we developed when soldiers complained that the US large square one actually obscured the target at ranges of 300 and greater.

I hope this helps you with the discussion and thank you for your interest in the C7.

Ian Anderson
ILS Supervisor
Product Engineering Dept.
Diemaco a division of Heroux- Devtek

Please note: Any opinions expressed or implied in this email are personal are not necessarily those of Heroux Devtek or Diemaco