Armaspec SMB - Sound Mitigation Buffer - .308 Buffer

The 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

SMB AR10 - 4.7 oz HEAVY SPRING

Installation instructions:
1. Insert polymer base with guide rod into the buffer tube.
2. Insert desired spring on the guide rod.
3. Insert the buffer over the spring. 

Note: Spring will fully set after approximately 10 shots.