Armaspec Sound Mitigation Buffer Gen 3, Buffer, Black - ARM258H2

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. PendingSMB-Carbine, SMB-H, SMB-H2, SMB-9, SMB-H3, SMB-308 SMB-CarbineEquivalent to a standard 3oz carbine bufferSMB-HEquivalent to an H 3.8oz bufferSMB-H2Equivalent to an H2 4.6oz bufferSMB-H3Equivalent to an H3 5.4oz bufferSMB-308Equivalent to a 5.7oz 308 buffer and the correct length to allow for proper over travel when used with large platform (.308, 6.5 Creedmoor, etc.)SMB-9Equivalent to a 9mm / PCC buffer which is typically around 6.2oz and is also extended to prevent excessive over travel when using PCC bolt carrier groups 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 100 shots. Main spring can be trimmed at .25 lbs per coil to reduce tension up to a max of 12 coils.