Cmmg Buffer Assembly Carb Mk3

The CMMG Buffer Assembly Carb Mk3 is a purpose-built buffer component engineered for AR-platform rifles chambered in intermediate rifle cartridges. This assembly integrates with CMMG's modular buffer system to regulate bolt carrier group cycling, ensuring consistent lockup and controlled recoil impulse transmission throughout the firing sequence. Made in the United States from premium materials, the CMMG Mk3 buffer assembly represents precision manufacturing standards expected in modern tactical rifle platforms.

This buffer assembly is designed for use with AR-15 buffer tubes and pairs with CMMG's 308 carbine buffer spring to manage the cycling characteristics of LR-308 Mk3 and AR-10 platforms. The assembly's compact footprint—measuring 4.5 x 1 x 3 inches and weighing 0.31 lbs—minimizes reciprocating mass while maintaining the inertial properties required for reliable operation. Compatibility with established AR-10 and LR-308 Mk3 receivers ensures straightforward installation into existing precision rifle builds without requiring adapter plates or custom modifications.

Operators building or upgrading semi-automatic rifle systems based on AR-10 platforms benefit from the Mk3 buffer assembly's role in optimizing bolt carrier group dynamics. Whether configuring a precision rifle for long-range accuracy work, patrol-duty carbine duty, or tactical rifle training, proper buffer selection directly influences reliability across varying ammunition types and environmental conditions. CMMG backs this component with a lifetime warranty against material defects and workmanship failures, reflecting confidence in domestic manufacturing quality and design longevity.