Lightest AR-15 Stock. Weighs 9.5 oz without Buffer and Spring. Uses Ace's soft, closed cell foam over tube for ultimate cheek weld. Billet machined gusset reinforces the receiver extension tube at its weakest point. Precision machined aluminum butt clamps directly to Buffer tube & Provides a machined sling mount. Includes .5" or 1" buttpad and buffer tube. 7.125" Overall length (without buttpad). Does not include Buffer Tube, Buffer, or Spring. 6.7oz