Armaspec SMB-H Gen3 Sound Mitigation Buffer Kit 3.8 oz - AR-15

The Armaspec Sound Mitigation Buffer H Gen3 is a single-stage captured drop-in replacement for your standard buffer and spring, engineered to dampen the metallic clatter of the bolt cycling and noticeably reduce felt recoil in your AR-15 build.

Built around Armaspec's third-generation Sound Mitigation Buffer (SMB) platform, the H (Heavy) weight variant is tuned to the operating mass of a direct-gas-impingement AR-15. The captured design keeps the buffer mass aligned with the spring for smoother cycling, quieter operation, and less energy transferred back into the receiver extension.

This Gen3 buffer kit ships complete with the buffer and matching spring, ready to drop into your existing mil-spec AR-15 lower. At 3.8 oz, the H weight provides the mass needed for reliable cycling and a noticeably quieter action than a standard carbine buffer.

Key Features:

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• Single-stage captured drop-in replacement for a standard AR-15 buffer and spring
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• SMB-H (Heavy) weight configured for the AR-15 platform
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• 3.8 oz buffer weight for smooth, quiet cycling
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• Reduces felt recoil and bolt noise through the firing cycle
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• Gen3 captured spring and buffer interface
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• Direct replacement for the factory AR-15 buffer and spring combination
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