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Posted: 6/23/2016 10:59:49 PM EDT
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Just learned I won a charity raffle and am getting a Bushmaster XM-15 QRC. Excited about winning and have been doing some research on the rifle. I'm not a fan of the gas block and would like to switch it out for something low profile and a BCM KMR. It seems like such a basic question, but I can't find anywhere on the net where it says what length gas system it uses. QRC stands for quick response carbine but the system appears to be midlength? Anybody know? Assuming the gas block is .625 for the lightweight barrel profile.
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| Thanks guys. The inner diameter on the BCM KMR is 1.3inches, so I will measure when I take possession to see how much to trim. I'm only dropping coin on the KMR at this point. Got enough parts and pieces laying around to do some extra mods without investing much more. Figure I might rattlecan this one too. |
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Quoted:
Thanks guys. The inner diameter on the BCM KMR is 1.3inches, so I will measure when I take possession to see how much to trim. I'm only dropping coin on the KMR at this point. Got enough parts and pieces laying around to do some extra mods without investing much more. Figure I might rattlecan this one too. I wouldn't concern yourself with the "anti" bushmaster comment(s) Absolutely no reason not to put a kmr and whatever else you want on it There's no need to measure anything when cutting the FSB down. Just Google pics of shaved FSBs and do it like that. I believe the top is already shaved so you would just need to hack off the bayonet lug/sling mount and smooth it out. I usually just touch them up with flat black high temp paint, exhaust system paint or barbeque paint works well |
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