Bravo Company's BCMGUNFIGHTER Stock Assembly Mod 0 SOPMOD is the strongest light-weight polymer stock available for your mil-spec receiver extension. With no sharp edges this snag free design prevents the tangling of the rifle with the shooter's sling" molle gear or other kit. It has a more pronounced cheek weld-SOPMOD type. The modular VBOST (Vehicle Borne Operations Sling Tab) interfaces with the shooter's riggers' band or bungee to secure the shooter's sling against the stock when the carbine is not in use. Increasingly" this is the most common application when operating inside a vehicle. It has 2 different types of ambidextrous sling mounting options" including QD swivel sockets and an integrated color matched rubber butt pad for secure shoulder placement" along with increased durability. With its simple modular design" 6 parts and 1 screw" it allows for modular adaption of future stock options and configurations. Includes a Mil-Spec receiver extension" buffer" buffer spring" end plate and castle nut lock ring.