The Black Rifle Depot CQC AR 15 Stock has a smaller overall size and we eliminated the sling loop which allows for more maneuverability in tight quarters. It features a snag free design eliminating opportunity to tangle in your sling or gear. With the AR 15 Stock at a overall weight of 4.9 oz it is almost two ounces lighter over the standard AR 15 Stock. This kit includes everything needed to finish your AR 15 and variant lower receiver. This is for the AR 15 Stock Only and would still need a AR 15 Mil Spec Buffer Tube Assembly.