CMMG 55CA9A2 AR15 Carbine Action Spring

AR-15 rifle buffer spring. Meets or exceeds mil-spec.

Mk3/LR308 carbine length buffer spring.

CMMG AR15 Carbine Buffer, must be used with AR15 Carbine Action Spring and with M4/Carbine length buffer tubes as well as the Fastback Receiver Extension. Meets or exceeds mil-spec.

CMMG 6-Position adjustable Mil-Spec Receiver Extension (Buffer Tube) kit includes everything needed to complete your AR's buffer system. Just add the mil-spec diameter carbine stock or brace of your...

The CMMG AR15 Carbine Receiver Extension and M4 Stock Kit has all the essentials for your next AR lower build. The M4 buttstock is a proven lightweight design that is extremely durable. Combine this...