The New Gen2 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
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.