CMMG 22D7C4A .22 LR 16.10″ Threaded Replacement Barrel Kit

Description

This CMMG 22D7C4A replacement barrel kit is designed for building a dedicated .22 LR AR-15/Mk4 upper or upgrading a conversion. The kit includes a 16.10″ threaded barrel and a barrel collar to replace the chamber adapter on compatible 22AR conversion systems. Finished for durability and intended for economical, low-recoil range training and general plinking use.

Key Specifications

• The cartridge is .22 LR for low-recoil, cost-effective shooting and training.
• The barrel measures 16.10 inches and is supplied threaded for muzzle accessories.
• The rate of twist is 1:16 to stabilize standard .22 LR projectiles.
• The finish is Salt Bath Nitride for enhanced surface hardness and corrosion resistance.
• The barrel material is specified as chromoly steel in the product naming.
• The contour is an M4 profile for a familiar AR-style balance.
• The muzzle threads are 1/2-28 for common .22-caliber muzzle devices.
• The kit includes a barrel collar to replace the chamber adapter on 22AR conversion systems.
• This component is intended to fit AR-15 / Mk4 platforms as stated in the product name.

Whether you are assembling a dedicated .22 LR upper for economical range work or replacing worn components on an existing conversion, this CMMG barrel kit offers a practical, durable option. Its threaded 16.10″ profile, familiar M4 contour, and corrosion-resistant nitride finish make it a straightforward choice for shooters focused on reliable, low-cost training and accurate rimfire performance.