JP Enterprises JP15 AR-15 Complete Upper Receiver 223 Remington (Wylde) 16" Barrel

The JP Enterprise JP-15 upper receiver assembly is built on a forged upper with a 16" Supermatch barrel. The lightweight barrel is made of 416 stainless steel, button rifled and cryogenically treated for outstanding accuracy. The 223 Wylde chamber is designed to be best of both the SAAMI commercial specification and the NATO chambering, allowing the widest variety of ammunition to be used, while retaining accuracy. The 1 in 8" twist rifling produces good results with bullet weights from 40 to 77