Armaspec SMB-AR10 Gen 3 Captured Sound Mitigation Buffer Silver

The Armaspec SMB-AR10 Gen 3 Sound Mitigation Buffer is a drop-in replacement buffer and spring system engineered for AR-10 and 6.5 Creedmoor platforms. The SMB uses a captured, single-stage design that retains the buffer against the bolt carrier during cycling, cutting the rearward slap and rattle common with standard AR-10 buffers while softening felt recoil and dampening the action's noise signature.

The complete Gen 3 system tips the scales at 7.20 oz, with an equivalent weight of roughly 4.7 oz, keeping it compatible with standard carbine and rifle-length AR-10 buffer tubes. The silver-finished buffer drops directly into the buffer tube in place of the factory buffer and spring and ships with a polymer base guide rod that keeps the spring centered and aligned under recoil for smooth, consistent cycling.

Built as a true drop-in upgrade, the SMB-AR10 Gen 3 installs without permanent modification, giving AR-10 and 6.5 Creedmoor builders a quieter, smoother-cycling action straight out of the box.