Modern technology meets "tried and true": K-SPEC buffers utilize an innovative captured compression system to absorb recoil and minimize muzzle rise - without any complex or expensive parts to wear down and fail. Paired with KAK Industry's flatwire spring and mil-spec carbine buffer tube, you have a complete buffer package for your pistol caliber carbine that eliminates bolt bounce, flattens muzzle rise, and smooths out recoil. KAK Industry developed their K-SPEC buffer system to offer the best value in recoil mitigation, 100% made in America for a lifetime of dependable use. This kit includes a steel K-SPEC buffer, flatwire spring, carbine buffer tube, an Mfg: Kak Industry Llc.