Grendel Hunter BCG & SMB Bundle

8620 Steel Carrier
4130 Steel Gas Key with Grade 8 fasteners (Staked)
4140 Steel Cam Pin
M16 Auto Profile
6.5 Grendel Type II (.136) / 6mm ARC / .22 ARC Bolt - 9310 Steel (Shot Peened)
Black Nitride
Mil-spec Gas Rings
MPI
Hard Chrome Firing Pin

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The Armaspec Gen3 Sound Mitigation Buffer™ SMB ™ is a single-stage drop-in replacement for your standard buffer and spring. The Sound Mitigation Buffer ™ is designed to keep the buffer spring from rubbing against the inner wall of the buffer tube providing smooth, quiet operation. Pat. Pending

We offer the Sound Mitigation Buffer™ in 3 variations. SMB-Carbine at about 3.3oz equivalent SMB-H at around 3.8oz equivalent and SMB-H2 at around 4.7oz equivalent.