Cmmg Ar-15 Buffer Assembly

The CMMG AR-15 Buffer Assembly (SKU: CMMG55CA977) is a mil-spec replacement buffer component designed for AR-15 and M4 platforms equipped with carbine receiver extensions. CMMG manufactures this assembly to OEM specifications, ensuring reliable bolt carrier group cycling and consistent recoil impulse management on standard carbine-length systems.

This buffer assembly delivers the predictable energy dissipation required for proper operation on carbine-configured AR-15 receivers. The mil-spec design ensures compatibility with CMMG 6-position M4 stock kits and standard mil-spec receivers using 1.148-inch carbine extension tubes. The compact dimensions (3 × 1.5 × 5 inches) and minimal weight (0.25 lbs) integrate seamlessly without altering the rifle's balance or handling characteristics during tactical manipulation or extended range sessions.

Operators maintaining or building carbine-profile AR-15 systems need a reliable buffer assembly that functions consistently across duty cycles. This CMMG component is ideal for patrol rifles, training builds, and defensive carbines where consistent recoil management is critical. Replacement becomes necessary when original buffers wear, delaminate, or fail to cycle the bolt reliably—common wear items on frequently-shot systems. The mil-spec standard ensures drop-in compatibility with existing receiver extensions without fitment issues or secondary modifications.

For shooters building or maintaining AR-15 platforms, buffer selection directly impacts cycling reliability and shot-to-shot consistency. CMMG's established manufacturing reputation in the AR-15 parts sector reflects the quality standard applied to this assembly. Procurement through TacticalSurplusUSA ensures authentic CMMG production with full part traceability via UPC 815835013497.