A1 T91 Complete Upper Receiver 5.56 Piston

The Wolf Performance A1 Complete AR-15 Upper Receiver provides shooters with all of the benefits of the standard AR-15 upper, which can be easily paired with any lower, while offering increased reliability over more common direct-impingement designs. The Wolf Performance A1 Complete AR-15 Upper Receiver is based on the design of the T91 rifle from Taiwan and offers the added reliability of a short-stroke piston system, which doesn't direct debris and other harsh byproducts of cartridge ignition back into the receiver, ensuring that nothing impedes the reliable performance of your rifle. Chambered in 5.56 NATO All-black finish Barrel length: 16.5 inches T Mfg: Wolf