Problems seen at the range.

It seems like every CORE15 AR15 I have seen at the range has jammed at some point while I was watching owner use it.  I don’t have the evidence to say damning things about the company, but I haven’t seen anything that would let me say good things about them.  A sample size of a half dozen isn’t good, but seeing a half dozen that appear to have issues isn’t comforting.

I have helped a few shooters clear squib loads recently.

1911 squibWhen ever you fire a shot that has reduced recoil, or an “inaudible pop” it is good to check to see if your round has actually left the bore.  Firing another round after a squib can have disastrous consequences.  Replacing a barrel is not cheap, however being injured by an exploding firearm can be even more expensive.

Case head separations are usually rare, but I have been seeing more of them, and reading about them more.  Perhaps due to the last ammo panic people are trying to get more uses out of each case.

Broken Shell Extractor

Spending a few dollars on a broken shell extractor may be well worth while.

High recoiling firearms can be punishing.  Nearly every day at the range we over hear someone complain about firing shotguns or Mosins.  Sometimes the recoil causes other issues.  People can drop a firearm after a surprising amount of recoil, and that recoil can break things.  For example this S&W scope mount came off a S&W .460.  The resulting flying scope hit the owner on his head and dented the Leupold.S&W .460S&W .460Dent Leupold

The owner explained that previously he was having issues with the screws in the scope rings breaking.  I keep thinking that if that recoil is breaking screws, what it must be doing to the owner of the firearm.

Glock G42 Stripped / New Internals

Now that I have vented and had time to cool down about the disappointing aspects of the G42, let’s look at some of the new things going on inside it. The new G42 has several unique, redesigned, internal components, that are very different from all other Glock’s. Right off the bat, you can see it is a 2 pin design, like the old Gen2 Glock’s, with a Gen4 magazine release and stippling.  I have completely stripped this G42 to give you an idea of what the new internal parts are and how they fit in the G42. When completely stripping the G42, you will notice some of the parts will fit together differently as well.  While I will not go into a complete tutorial on how to strip your Glock down, it is not extremely difficult and you can learn how to properly do it with some quality research.

When stripping the G42 completely down, pay close attention to the parts that are significantly different in their design and placement in the G42, compared to other Glock Models . Below are several pictures of a completely stripped G42 and the new internal parts.

Glock G42 complete takedown/stripped
Glock G42 complete takedown/stripped

Slide Stop Lever:

You will need to take the Locking Block out first to remove the Slide Stop Lever, after removing the frame/trigger pin.

Slide Stop Lever in Frame
Slide Stop Lever in Frame
Slide Stop Lever
Slide Stop Lever

Firing Pin Safety:

The Firing Pin Safety is completely different and can only go in one way. The notch on the left side of this picture faces the Firing Pin.

Firing Pin Safety
Firing Pin Safety

Trigger Mechanism Housing, Bar & Spring:

The new Trigger Spring and Trigger Bar will fit together very differently with the Trigger Mechanism Housing. The Trigger Spring has a metal hook that the “T” of the Trigger Bar will need to fit under for reassembly.

Trigger bar / Spring / Mechanism Housing
Trigger bar / Spring / Mechanism Housing


The Connector, although it looks to be identical is much shorter as the Trigger Mechanism Housing is smaller. The standard Glock Connectors will not be compatible.  This answers the questions of those wanting to put a (-) 4 lbs. OEM Connector in the G42. As the Trigger Spring is a redesign, the standard Glock spring options ( NY1) are also not an option.

Trigger Spring/ Connector/ Mechanism Housing
Trigger Spring/ Connector/ Mechanism Housing

The Trigger Spring is more difficult to remove from the housing then the standard Glock Trigger Spring. The housing has a bar and notch system for removing and replacing the Trigger Spring.  While removing it was easy, replacing it was a little hard.

Trigger spring / Mechanism Housing
Trigger spring / Mechanism Housing

Extractor Depressor Plunger:

The Extractor Depressor Plunger is basically the same, but instead of a large flat head, it tapers down to a firing pin look.

Extractor Depressor Plunger
Extractor Depressor Plunger

Final Note:

If you are not a Glock Armorer, Gunsmith or you are very unfamiliar with stripping your Glock down, I would not recommend any disassembly past regular field strip maintenance. Most people will have no need to break the firearm down to this level. 90% of the G42 parts look just like the Glock parts you will be familiar with. When I was stripping the G42, I did not expect some of the parts to fit together so differently. I realized I did not pay as much attention as I should have and it took me a few minutes to get it back together.


For recent part changes Glock has made in new production  G42’s, check out the article linked below. 

Link: Glock Appears to Have Made Changes to the G42

For information on the Glock G43 Single Stack 9mm parts,check out the article linked below. 

Link: Glock G43 Stripped Vs. G42 Internals

Review: Scorpion EVO

Review submitted by Franco Franzoso.

The Scorpion EVO 3 S1 is the civil legal version of the EVO 3 A1; it comes in a simple cardboard box with two 20 rounds translucent magazines, a bore snake and the manual. This version not only is semiauto but it’s also chambered for the weird 9×21 IMI since the 9Paral is still banned for us poor civilians…

The first thing you notice about this new SMG/PDW is that it’s entirely made of polymer (glass-filled Nylon) but it’s actually heavier & more solid than it looks: (2.3Kg empty). The only metal parts are the barrel & bolt assembly, FCG and sights.

Once you handle this little carbine it’s amazing how solid it feels. There’s absolutely no play between the parts. The weapon is also extremely well balanced making it easy to maneuver indoors and around the corners.

The adjustable stock has 3 length positions and can be folded on the right side. To lock the stock folded it has to be fully collapsed (there’s one little hook on the buttstock that engages the receiver). When the stock is folded it doesn’t interfere with any controls. Another interesting feature is that the stock can also be removed without tools. The Evo is so compact that will fit nicely my Maxpedition Larkspur bag leaving enough space for mags and ammo.

All the controls are ambidextrous except the bolt release which is located only on the left side.

The selector lever reminds the one on the HK G36 in shape and clicks positively into both positions.

The mag release is located forward the trigger guard on both sides; it can be activated either with the trigger finger or the thumb of the reloading hand.

The charging handle is reversible and not reciprocating.

The pistol grip angle and size is very similar to the old M16A1 one; the trigger reach is adjustable by loosening one hex screw and sliding the grip back or forward.

The EVO comes with a long Picatinny rail on top of the receiver and three more rails on the handguard at 3, 6 and 9 o’clock positions in order to accommodate flashlights, lasers and aiming devices. All the rails are part of the mold and not removable.

The CHF barrel is 196mm long with 1/10’’ twist and the muzzle is threaded M18x1 for a sound suppressor. The factory muzzle device is a simple bird cage style that works more as muzzle protector than a flash hider or muzzle brake.

The iron sights are manufactured by LPA in Italy; the rear one is adjustable in both elevation and windage. According to the manual the maximum effective range of the Scorpion is 250m when fired from the shoulder.

Field stripping is achieved without tools by removing only one pin, which allows the trigger group to come out, like with the FN SCAR. Then the bolt assembly can be removed from the bottom of the upper receiver. Further disassembly is not required and not recommended.

I tested the Scorpion in a very short (only 7m) indoor range using some old Samson 123g FMJ, Fiocchi 123g RNCP and Fiocchi 148g TCCP Subsonic. The Evo ran fine with all of them.

The trigger is a single stage and not adjustable, very similar to the one on my factory Colt AR15: not too heavy and not gritty at all.

Scorpion EVO Scorpion EVO

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D&H Flat Dark Earth USGI Magazines



While at the local Cabellas I spied a great deal on some FDE  aluminum USGI magazines for around 9 bucks. Being a fan of cheap USGI mags and FDE, I thought this was too good a deal to pass on. I also wanted to test them out being I had not had any time with the D&H brand of mags.

So far, the mags are working fine. The follower is not a magpul follower or a version of it. But, it does work fine so far. The color of the mags does match up pretty well with other FDE items. I admit I do really like FDE over black since black really does stick out like a sore thumb and I personally find FDE/Coyote tan aesthetically pleasing.


You can see how well the mag compares to Colt’s FDE factory anodizing, along with all the other FDE items on my carbine.


The bad news is.  The coating, and that is what it is, comes off very fast and very easy.  This is not something I care about since condition of finish is not even on my list of things I don’t care about but, there does not seem to be anything other then this coating.  The finish seems more like krylon  painted mags with no real finish underneath.  It is just straight up metal under the cheap useless tan finish ( paint?).  After only a few time using them mags, they are already large bright silver showing through.  Even rough rubbing with a finger nail will start to wear it off.   The mags work fine, but I could have paid 12 bucks for a Okay brand of Colt mag and painted it with a can of krylon.  I would not buy these if unless you ran across a bunch for 8 bucks and did not mind the coating stripping off when you looked at it mean.  I would buy the much better DSG FDE mags if I wanted a tan mag that was reliable, tough and had a finish that would not come off.

The Winchester Model 52


The Model 52 Winchester is regarded as one of Winchesters true masterpieces of the ancient world. It came about after the United States’  came back from WW1. At that time a lot of returning vets had grown to like the bolt action rifle over the lever action guns used for many years.   Thought up as a means to offer a quality target rifle in the more affordable .22 long rifle. the 52 was considered a classic form its start.

The first models where pretty much military training rifles. They looked a lot like the 1903 and Winchester had  hoped to be making a lot of them for the military.  The early guns had a very distinct military style carried over from the war. After the national matches of 1919 where the M52 was first used in  matches, many other versions followed with a production of over 125,000 made up into the 80s.  The down side was, the 52 was expensive, very expensive and labor intensive.  It really is a classic. In my years I have heard it called “the most perfect rifle ever made” and  “perfection in design” which is even a title of a book about the rifle.   Few who have experience with one wil disagree that is truly was the finest production target rifle ever made in the country by a factory.


The model I own in the pictures above are the Model52 B.  The “B” does not really mean anything or denote details, it is just a stamping and used by people to get a rough idea of what and when the gun was made.  My rifle in the picture has a lyman peep sight used for shooting at vermin as opposed to large target sights.  On the right side of the stock you can see the magazine release button.  The ’52 uses a standard 5 round magazine  but would also take a mag block to make the gun a single fire, a extended 10 round magazine as well.  The magazine was very tough and I have never seen or heard of one failing. The same mag was used in the M69, the M75 and the M52.


the top of the action shows the machined flat for another model of rear sight that could come with the rifle. Sights could be selected by the buyer in the long gone age, back when factories really tried to satisfy customers. Forward of the receiver, on the barrel, you can see a target sight block. This is the type used for target scopes of the era. Mine is a Unertl block to accpet a Unertl target optic.  You may also notice the profile of the wlanut stock.  This type was called the “Marksman” stock.  It was the same type used on the Model 70 target adn National Match rifles. The stock was also used by Winchester on the heavy varmint models before going out of business, though it was made by H_S Precision in their synthetic/viberglass with bedding blocks and pillar bedding.  It is still a very useable and comfortable stock for general use.


The wide forearm of the stock had an accessory rail installed for a variety of extras. Mine has the standard front swivel for a sling and the hand stop with sling swivel. The slots allow the shooter to move the accessories to any position desired.  These are the factory parts, but a large amount of other target factory and custom pieces would fit and were used.


The barrel on the target M52 B was a very heavy target barrel and they are exceptionally accurate. With proper ammo, it is easy to shoot 5 rounds into almost one hole at 25 yards and sub MOA at 50 yards. These are some of the best barrels made at the time and the 52 was already hand fitted to be as accurate as humans knew how to make a rimfire at the time.  As before, the front sight is a smaller model for field work. The front sight is installed and removed by drifting it in via dove tail. The crown is a flat target crown.


The barrel has the forward target/optic block the proper distance from the rear for the optics at the time. The scopes needed a certain distance from each other to allow the target elevation and windage turrets to have a value of 1/4 MOA.  Further apart or closer made the clicks move the POI more or less.  You can see the barrel band before the end of the fore arm. Surprisingly to some, the barrel is not free floated. The gun is still astoundingly accurate, the match gunsmiths at Winchester at the time, knew how to make a gun accurate before free floating became something  every one wanted. I have found the barrel band does not hurt POI or shift zero even when temp or weather conditions would effect the zero of lesser guns.


Above is the inside of the action. The trigger on Model 52s are another legend , and they are as fine a target trigger that can be found on a non custom gun. It indeed feels like a custom trigger and can be adjusted easy.  The bolt is jeweled and very smooth with  dual extractors.  The safety can be seen on the right hand side of the action near the tang.


And above, is a picture with a variety of standard accessories that would have came with the M52.  A Redfield Olympic front and rear iron sight set, a Lyman small peep and a Lyman front sight.  The front sight inserts are at the far right. They go into the front sight and allow you to change from post to globe. Below the Redield rear sight in the target block for installed the rear sight on the receiver of the action. It allows some forward and rear placement for eye relief and comfort.


Above is an optic that is the finest rifle telescope ever produced in the US of A.  It is of course a Unertl ( pronounced  YOU- NUR-DULL ) target/varmint 12x optic.  It is externally adjustable and I have talked about them at length before. It would have been common to see the Unertl scopes on guns way up until the 80s.  The rifle/optic combo is a real classic or its day and would have been the mark of a series small bore shooter.

There was a lot different 52s made over its run though not that many made over all. It just cost too much at the time and few people took target shooting serious. The high cost and effort to make the gun doomed it before the shooting sports grew to be as popular as they are now.   For a while, Winchester/Olin had a sporter version made in Japan that is sold here, but of course it was not the same. Although a serviceable plinker, they did not have the level of craftsmanship and quality in them to equal the originals.

More SHOT SHOW 2014 Pictures

Some more pictures from Loose Rounds’ Field Correspondent Catherine Kim at SHOT SHOW 2014.

Some of Trijicon’s offerings this year:

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Below is some pictures of Colt’s new guns.  The carbine is the 6940 ambi-enhanced . with ambi lower and modular , monolithic upper.  Lower is ambi and is a 5.56 version of the 901 lower.

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Here are some of H&K product for those who love HK

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Some Misc pictures of a few interesting things.

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You can see a lot more pictures from SHOT Show this year on  the LooseRounds’ facebook page.

Changes in the Trijicon ACOG line of scopes.

Over the years, Trijicon has been making incremental changes in the ACOG line of scopes.  Here are a few pictures that show a M150 model made in 2013 and a couple year old TA31RCO-M4 model to show some of the newest little changes.

One of the more noticeable external changes is that many of the newer 3.5x and 4x scopes have the bosses that allow for mini-red dot mounting.

Trijicon ACOG


The top ACOG has the bosses (ears near the eye piece) to allow for piggyback mini-red dot mounting.  The only downside to having the MRD bosses is that you can no longer slip on a flip up lens cap on the eye piece.

A smaller less noticable external change is that newer ACOG’s no longer have a bible verse on the side of them.  This was removed after it was made widely known in the public, and we wouldn’t want a bible verse on our military rifles because we don’t want to offend the people we are killing.

Trijicon ACOG bible verse removedThis ACOG (above) has had the area where the bible verse would have been removed.  Newer ACOGs (below) do not have the bible verse at all.

Trijicon ACOG


Formally the ACOGs had JN8:12 marked on the side after the model type.

Many new ACOG scopes come with 1/2 MOA turret adjustments now instead of the old 1/3 MOA coin slots.  While this is a coarser adjustment, the new turrets are much easier to adjust, and increase the water resistances of the optic.  I like how some of the newer ACOGs are marked with clear external markings showing which way you need to adjust the turret to move the point of impact.

Trijicon ACOG


Trijicon has also changed their reticles.  Now more of the reticle is illuminated then before on the many of their ACOG scopes.  While Trijicon has changed the amount of illumination in the tritium only TA01 series of ACOGs often, this last change increased the the illuminated area on the TA31 red chevron line of scopes.  Previously these had the red chevron and the 300m post illuminated, but now the 400m and 500m lines and much of the bar leading to 600m is illuminated.  Trijicon’s reticle pictures on their website have been updated to reflect these changes.