The KP-15 is a monolithic polymer AR15 style receiver made from injection molded 30% glass filled nylon incorporating the buttstock, buffer tube, pistol grip, and trigger into the receiver design as integral components. This manufacturing process offers several advantages Lighter weight compared to similarly configured receivers Lower cost to similarly configured receivers Increased production speed and elimination of sub components through integration; especially important during high demand cycles in the market. Features Include: Compatibility with most common AR15 uppers and lower parts kits Flared magwell to make reloads under stress Mfg: Ke Arms