An adjustable bolt carrier vent for suppressed and non suppressed
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There's another manufacturer with an adjustable gas bolt carrier as well. I'll have to find it. There are also at least 2 adjustable gas keys. Sun Devil and Rubber City Armory.NRA Basic, Pistol, Rifle, Shotgun, RSO
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com
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