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-   -   AR Service rifle? (http://forums.thecmp.org/showthread.php?t=261519)

Beeks 04-07-2020 06:30 PM

AR Service rifle?
 
The rules clearly state that adjustable gas blocks are not permitted. What about adjustable gas tubes or an adjustable gas key? My AR is over gassed. Im looking for options.

Gewehr43 04-07-2020 11:05 PM

I'm of the approach that when I shoot competitions I don't any sort of equipment challenges.... that said.... I wouldn't use those either.

Why don't you fix the root problem here and sort out why your rifle is over gassed?

la Fiere 04-08-2020 12:42 AM

Heavier buffer?

Beeks 04-08-2020 06:10 PM

I’ve shot this rifle two seasons now. After the first season the rubber stopper on the buffer was completely destroyed. I replaced it with an H2 buffer. Very minimal improvement there. The brass gets sooty.

So how do I figure out why my rifle is over gassed?

The barrel is a Bushmaster DCM that was purchased new at Camp Perry a few years ago. I verified that the buffer spring is correct.

Gewehr43 04-08-2020 07:32 PM

You bought just the barrel there or?
What I'm getting at is there a way the rifle is still under a warranty and simply send it back to the maker?

cranehunter 04-08-2020 08:24 PM

Look at your ammo first.

Beeks 04-09-2020 01:17 PM

I built the rifle myself. Just the barrel was purchased from Perry. A few people I shoot with are using the same barrels with good results. I’ve tried a variety of handloads as well as complete ammo including Federal Gold Medal Match. I have not noticed any difference with ammo selection.

Gewehr43 04-09-2020 03:51 PM

Ok... you built it yourself...
Which Armorers course did you take prior to the build?
Where did you get the other parts for the build?

With the factory ammo what exacting happens and how did you figure out what/how the damage occurred?
What I'm asking is a detailed explanation as to what happened...

Beeks 04-09-2020 05:27 PM

I didn’t take a course. I just read a book. I don’t recall the name any more. The other parts were all purchased new from a variety of places. PSA bcg, la rue quad rail, Ergo f93 stock, Geissel trigger, etc.

The rifle throws brass twice as far as the rifles I shoot against. The brass comes out sooty like it’s being extracted before the pressure in the barrel is completely gone. After the first season I stripped down the rifle and found the rubber end of the buffer destroyed.

4gun-drill 04-09-2020 08:32 PM

Whats does it headspace at?


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