Strike Industries Viper Mod-1 carbine stock, Black/Red, mil-spec buffer tube compatible (approximately 1.148″ OD, not commercial-spec). Polymer frame with impact-resistant TPE, 6 length-of-pull positions from 11.25″ to 14.25″, integrated QD sling mounting points on both sides, textured cheek weld, rubber buttpad. 2 lbs.