Armaspec SMB Buffer Kit, H2 Weight

The Armaspec SMB Buffer Kit, H2 Weight, Gen 3 (brand part no. ARM268H2) is a complete drop-in buffer upgrade built around Armaspec’s Sound Mitigation Buffer (SMB) system. Armaspec designed the SMB to replace the OEM mil-spec buffer spring and weight as a matched pair, and the H2-weight version steps up the mass another notch for builds that run noticeably over-gassed, such as short-barreled or suppressed carbines. The extra weight slows bolt-carrier velocity further, which helps control felt recoil and bolt bounce on guns that would otherwise cycle too hard. This kit includes everything needed to complete the buffer system, so there is no need to source a separately matched spring.

Key Specifications

• Built around Armaspec’s Sound Mitigation Buffer (SMB) design for quieter, smoother cycling than an OEM buffer.
• Uses H2-weight mass, a step up from H-weight for builds running noticeably over-gassed, such as short-barreled or suppressed carbines.
• Sold as a complete buffer tube assembly kit, including the matched spring needed alongside the SMB weight.

Frequently Asked Questions

When should I choose H2 weight over H weight? H2 adds more mass than H weight, making it a better fit for builds that run noticeably over-gassed, such as short-barreled or suppressed AR-15 carbines.

Does this kit include the spring? Yes, it is a complete buffer tube assembly with the SMB weight and its matched spring.

Buy the Armaspec SMB Buffer Kit, H2 Weight

Get a suppressed or short-barreled AR-15 cycling smoothly with a heavier, quieter buffer sized for the job. Browse Schaefer Defense’s AR buffer system parts and order from our Lubbock, Texas gun shop for fast shipping.