Armaspec AR-15 SMB Buffer Kit Gen 3 Features The Armaspec SMB Buffer Kit Gen 3 centers on the Sound Mitigation Buffer a superior upgrade in place of the OEM mil-spec buffer springs and weights found in a standard AR-15 build. By mitigating the harsh metallic impact typically felt and heard as the bolt carrier group cycles home the SMB buffer delivers a noticeably smoother quieter shooting experience shot after shot. This matters for shooters who want to reduce fatigue over a long range session or who simply prefer a more refined feeling rifle. The buffer itself weighs 3.3 ounces placing it in a weight range suited to a variety of common AR-15 gas system configurations. Because this kit comes as a complete four piece package including the SMB buffer a matching buffer tube endplate and castle nut builders have everything needed to complete the rear end of their rifle in one purchase rather than sourcing individual components separately. This is particularly useful for a from scratch build where the stock assembly has not yet been started. Finished in black and silver the kit fits any standard AR-15 pattern rifle without modification. For AR-15 builders who want to reduce recoil impulse and noise while completing their buffer tube assembly in one step the Armaspec SMB Buffer Kit Gen 3 is for sale at GrabAGun. Armaspec AR-15 SMB Buffer Kit Gen 3 Specifications Manufacturer: Armaspec Model: SMB Buffer Kit Gen 3 Type: Buffer Tube Complete Assembly Compatible Hosts: AR-15 Color: Black / Silver Includes: SMB Buffer Buffer Tube Endplate Castle Nut Pieces: 4 Available At: GrabAGun