• Mounts on durable Entry Receiver Extension tube (included) to accomodate the common M4 carbine buffer and spring •7-Position LOP adjustability with customizable preset system for fast access to preferred length • Solid “fixed stock” lockup in all positions • Enhanced lock mechanism w/ integral impact buffer increases drop strength and shock reduction Color: Black (BLK), Flat Dark Earth (FDE), Olive Drab (OD)
