Armaspec SMB-H Sound Mitigation Buffer Gen 3 Captured Silver AR-15

The Armaspec Sound Mitigation Buffer (SMB) Gen 3 in the SMB-H configuration is a single-stage captured drop-in replacement buffer and spring system for the AR-15 platform, engineered to quiet the noise generated by the standard buffer and spring while smoothing felt recoil.

The SMB-H weighs 3.8 oz and carries a Silver finish. Its captured design retains the buffer weight inside the system, eliminating the typical spring rattle and giving more consistent cycling. It drops directly into a standard AR-15 lower receiver buffer tube in place of the factory buffer and spring - no modifications required.

Whether you are building a quieter carbine, reducing felt recoil for faster follow-up shots, or simply upgrading from a mil-spec buffer, the Armaspec SMB-H Gen 3 is a compact, drop-in solution for the AR-15.