Armaspec H Gen3 Sound Mitigation Buffer Kit SS/Black. This Kit comes with our SMB ( Sound Mitigation Buffer) A superior upgrade buffer in place of the OEM mil-spec buffer springs and weights. Specifications for Armaspec H Gen3 Sound Mitigation Buffer Kit: Manufacturer: Armaspec Color: Stainless/Black Weight: 3.8 oz Country of Origin: USA Features of Armaspec H Gen3 Sound Mitigation Buffer Kit Coming Soon Package Contents: Armaspec H Gen3 Sound Mitigation Buffer Kit Armaspec ARM268-H: H Gen3 Sound Mitigation Buffer Kit SS/Black