Bootleg Inc. Adjustable 5.56 M16 / AR-15 Bolt Carrier Group - Lithium Isonite

have two of them. One lives in a Spikes 5.56 build and the other in a PSA .300 build. Both function excellently, suppressed and I suppressed. The 5.56 is a mid length 14.5 barrel; the .300 is an 8.5 pistol length. Shooting unsuppressed, just leave these as normal on the unsuppressed setting, can even tweak the gas setting a little for hotter ammo vs more tame/underpowered stuff. I shoot suppressed with a DA Nomad-30, which produces some back pressure and rapid cycling unless the gas settings are reduced. In the 5.56 I use full suppressed setting for reliable cycling and for lower powered stuff MAYBE the second to lowest setting. For .300 AAC suppressed w/ same can: supersonic rounds need full suppressed setting, sub-Sonics need the full unsuppressed setting. I can switch ammo and all I have to do is change the setting, which I can reach through the ejection port. No disassembling or changing buffers needed.