KAK Industry KF-15 AR-15 Multi Caliber Complete Lower Receiver Without Stock

The KAK Industry KF-15 is a complete AR-15 lower receiver sold without a stock. The receiver is machined from aluminum forgings and finished deep matte black. KAK fills it with its own lower parts and adds a mil spec buffer tube and buffer, so it is ready for the stock you prefer and an upper. It is a multi caliber lower, which means the chambering is set by the upper you pair it with.

The details on the receiver are practical ones. Pictogram selector markings are on both sides, so the safety position can be read from either side of the rifle. The receiver is threaded for an upper receiver tension screw, which lets you take up play between the upper and lower for a tighter fit. KAK cuts it to accept any mil spec sized lower receiver component, so standard AR-15 triggers, grips and other lower parts fit if you decide to change something later.