Muzzle brakes and back pressure

[kcheung2]

You keep using the term "flash hider" and "muzzle brake" interchangeably even though they are not the same. If the factory stock muzzle device is indeed a brake, then why change it at all?

And what did you replace it with?

[Xtracrispy]

[HooYah]

Try some milspec M80 ball ammo. I also have a NIB Surefire SOCOM 7.62 muzzle brake that I'm selling if you need a brake.

[colt11]

Your concept of back pressure is commonly stated as being over or under gassed, and it sounds like your ammunition choice was on the light side. I've never tried ZQI Ammo, but I believe it's imported from Turkey and may not be a full NATO spec load. Removing the flash hider may have shortened the dwell time by allowing the bullet to "uncork" sooner. Try some Winchester 7.62x51 NATO white box. You might also check your gas port hole for build up.

[wilderness medic]

You keep using the term "flash hider" and "muzzle brake" interchangeably even though they are not the same. If the factory stock muzzle device is indeed a brake, then why change it at all?

And what did you replace it with?

[God Bless America]

OP definitely try different ammo, it's the cheapest test, but ZQI is supposed to be full power NATO-spec ammo and it has certainly behaved that way in my experience with it. You may have got a bad batch. I once had a batch of Wolf 223 that caused short-stroking in an AR. Never before, not since. But ZQI is better spec ammo than the cheaoest wolf 223.

Any muzzle device (except suppressors) on a modern infantry weapon will have loose enough tolerance that the gun will be designed shoot without it. If the absence of a muzzle device is actually causing malfs, then the gun has a different problem which needs to be solved.

I suspect your mag catch is the issue or the bolt hold open. To wit: http://www.calguns.net/calgunforum/s....php?t=1298841

and

http://www.calguns.net/calgunforum/showthread.php?t=1311643

[wilderness medic]

OP definitely try different ammo, it's the cheapest test, but ZQI is supposed to be full power NATO-spec ammo and it has certainly behaved that way in my experience with it. You may have got a bad batch. I once had a batch of Wolf 223 that caused short-stroking in an AR. Never before, not since. But ZQI is better spec ammo than the cheaoest wolf 223.

Any muzzle device (except suppressors) on a modern infantry weapon will have loose enough tolerance that the gun will be designed shoot without it. If the absence of a muzzle device is actually causing malfs, then the gun has a different problem which needs to be solved.

I suspect your mag catch is the issue or the bolt hold open. To wit: http://www.calguns.net/calgunforum/s....php?t=1298841

and

http://www.calguns.net/calgunforum/s....php?t=1311643

Interesting. Ill check out the stock mag release. I would think it would work better than the Raddlock I just took off but maybe I put it back on a little bit off or something