Our Raider bullpup kit fits the Ruger® 10/22 carbine models with an 18.5″ barrel. Either the tapered or bull barrel will work in the kit. The Raptor system thumb ring Rapier pistol chassis allows for 25 round mags. Has optional grips of with or without front strap in black or brushed raw aluminum. Butt section has storage for factory 10 round mag. Has option for a left side charging handle. Comes with full length top and bottom pic rails. Butt section has storage for factory 10 round mag. Standard finish is matte black powder coat with black delrin grip chassis without front strap. Also available with front strap and in brushed raw aluminum. Side pic rails and flip up sights are available.