CMMG Receiver Extension kit Pistol

The CMMG Receiver Extension Kit Pistol is a dedicated component assembly designed to complete a pistol lower receiver build. This kit pairs a CMMG pistol receiver extension with a carbine buffer assembly and carbine action spring, providing the foundational recoil management system required for a functioning pistol platform. The kit integrates with your choice of lower parts kit to create a complete pistol lower group assembly.

The receiver extension tube diameter and length are dimensioned to accept standard carbine buffer assemblies, which house the action spring and buffer weight. This configuration is common in modern pistol platform builds where the receiver extension serves as the rear structural member of the lower receiver. Proper fit and assembly of these components ensures reliable cycling and consistent recoil impulse. The CMMG receiver extension is manufactured to specification tolerances that support precision lower receiver builds, and the included carbine spring maintains consistent hammer return force across repeated cycles.

This kit is intended for builders and gunsmiths assembling custom pistol platform receivers or those replacing worn recoil system components in existing lower groups. It is particularly useful for those standardizing their build parts on CMMG components or those sourcing complete kit solutions rather than sourcing individual pieces. The kit reduces the number of separate transactions required to acquire all three components and ensures compatibility among parts supplied together by the manufacturer.

Pistol receiver extension kits occupy an essential role in modern modular weapon platforms, where builders customize lower receiver assemblies to match their specific platform requirements. CMMG is known for manufacturing precision-machined components to military and commercial standards, making this kit a reliable choice for dedicated builders who prioritize component quality and dimensional accuracy in their builds.