CMMG 55CA646 Receiver Extension Kit A1 Fixed Black Synthetic for AR-Platform

The CMMG A1 Receiver Extension and Stock kit contains a rifle buffer assembly, rifle action spring and an A1 rifle length butt stock assembly. Combine this kit with your choice of Lower Parts Kit to complete your lower receiver group. Made from high strength polymers for maximum durability without the need for a foam filled core. The CMMG® A1 stock features a rear storage compartment and sling mount and is one of the most iconic AR accessories ever produced.