Tag Archives: BUIS

Magpul PRO LR sights

Last week I bought a set of Magpul PRO LR flip up iron sights.  I got to try them out yesterday at the range and I am liking them.

Magpul PRO

The KAC 2-600m sight are still my favorite, but I think these Magpul PRO sights are well worth the cost.

Magpul PRO

Both the front and rear sight are very low profile.  A very small footprint for either sight.  Both sights have tool less adjustments.  When I first unboxed the sights, I was very impressed with the heavy duty feel of the sights.  The melonited case hardened steel should end up being a very tough, rust resistant sight.

Magpul PRO LR

I really appreciate how the mounting screw for these sights can be tightened by a screw driver or a 1/8 inch Allen wrench.  The PRO LR rear sight has an elevation adjustment wheel unlike the Magpul PRO.

Magpul PRO LR deployed

The elevation wheel is can be set from 2-6 with a single click in between each.  The rear sight offers small and large apertures.  The front sight post is a narrower match style.

I really like these sights, and I recommend them.  These little steel sights feel substantial.  I was worried at first that they would be too stiff and too small to deploy quickly, but since installing them I found that isn’t an issue.  The adjustment are stiff, which I prefer so there isn’t a concern of accidentally adjustment.

The only criticism I can come up with for these are that the back sides when flipped up don’t have the best aesthetics.

Magpul PRO Front Sight Deployed

I also wouldn’t mind seeing a 100 setting for the rear sight.

 

ACOG EREK

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I managed to purchase for my self an ACOG EREK cantilever adapter.

Now to be honest, I’m not exactly sure what EREK stands for.  I’m guessing something like Eye Relief Extension Kit.

So why did I buy it?  Because I wanted one.  Some time back, I saw some pictures of the USMC trying a cantilever mount for the ACOG on the M16A4.  Since them I have wanted to give it a try.

When you read about people complaining about the ACOG, the first complaint is always price, the second tends to be about the short unforgiving eye relief.  Once you take that short eye relief of the ACOG and have to mount a BUIS behind it, combined with a fixed stock, it can be annoying.  Personally, not only have I gotten used to it, I am rather fond of the ACOG mounted forward as I shoot nose to the charging handle.

So at some point the USMC had some adapters made up that moved the ACOG back and over the Knights 2-600m rear sight.  This makes the ACOG easier to use with the A2 fixed stock.  Now I tried to find pictures of it in use again, but I was unable too.  My guess is that the USMC tested it and for what ever reason decided not to use them.

Why?  I don’t know.  Perhaps raising the ACOG up make it more unacceptable to damage or abuse changing the zero.  It might not have been worth the cost.  Or someone might have come to their senses and said use the M4 instead.  In any event, I have one to use now, and it is rather nice.  It lifts the ACOG up enough that the charging handle is easily accessible, and moves the ACOG far enough back that you don’t need to crane your head forward for nose to the charging handle.

 

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On Back Up Sights

I have seen many arguments online about the necessity of back up sights on a rifle using optics.  The general concensious seems to be that they are needed on military rifles, but not on civilian rifles.  This is not the case.

In the military people work in teams and are almost never alone.  Should a rifle go down it is not really an issue as you still have many other people capable of continuing the fight.  For the civilian and the police officer this is often not the same.  If someone wakes up in their home and finds the battery dead in their reflex sighted rifle it helps to have iron sights.  However if a Marine’s optics fails, he is only reducing his squads fighting ability by 1/13 its firepower.

So do you need back up irons?  First needs to consider if the rifle is a toy, or a tool for fighting.  If it is a toy, back up sights are not necessary.  If it is a fighting tool, look at its role and how it is set up.  If you are running battery powered optics or magnified optics on quick detach mounts, I would suggest back up sights.  So if you need to use a wrench to remove your optic, back up sights may not be practical for you and you may be better off switching to a different weapon.

“Damn, the batteries are dead.”  Is not an uncommon saying at the range I work at.  Not only among cheap optics with poor battery life, but often about Eotechs.  Batteries discharge, cheap batteries and cheap optics drain even faster.  Even the best optics can be broken.  On the range this is just an annoyance, for the Soldier or Marine it means that their buddies will have to take up the slack.  However if you, as a lone civilian or law enforcement officer, have this happen in the fight, the results can be costly.

I highly recommend back up sights on the individuals fighting rifle.  If you are fighting by your self, being able to keep your weapon in the fight is crucial.

On that note, also make sure to keep your back up sights zeroed.