Engineered for consistent function across varied conditions, the Armaspec SMB Buffer Kit H2 Gen 3 promotes reliable operation.\n\nThe Armaspec SMB Kit comes with everything needed to complete your rifle build. This Kit comes with Armaspec's SMB (Sound Mitigation Buffer), a superior upgrade buffer in place of the OEM mil-spec buffer springs and weights. Ideal for range training, practice, and recreational shooting, Armaspec is known for its reliable and innovative product development.\n\n- Manufacturer: Armaspec\n- Model: SMB Buffer Kit Gen 3\n- Product Type: Buffer Tube Complete Assembly\n- Weight: 4.7oz\n- Unique Features: Includes SMB Buffer, Buffer Tube, Endplate, and Castle Nut\n- What's In The Box: SMB Buffer, Buffer Tube, Endplate, Castle Nut