CMMG 55CA6C7 Receiver Extension Kit For AR-15 Carbine, Black Anodized Aluminum

This CMMG AR-15 Carbine Receiver Extension Kit is designed to provide all the core parts needed to complete your carbine-length buffer system. Constructed from aluminum with a durable black anodized finish, the kit offers a 6-position adjustable receiver extension, compatible with most AR-15 carbine platform builds. - 6-position adjustable aluminum receiver extension, black anodized - Includes buffer tube, buffer, action spring, receiver end plate, and castle nut - Designed for AR-15 carbine-style buffer systems Ideal for AR-15 builds or upgrades, this kit ensures reliable function and includes all major buffer assembly components for straightforward installation.