The Wraithworks WARSCORP9 is an innovative American-made 9mm pistol caliber carbine (PCC) platform. It holds a unique spot in firearms history as the first AR-9 pattern receiver in the United States explicitly engineered from the ground up to feed from CZ Scorpion EVO 9mm magazines. Before the WARSCORP9, shooters looking for an AR-style 9mm carbine were typically forced to choose between lowers designed around Glock magazines or Colt stick mags. While functional, Glock magazines feed from a single-feed position (making them stiff to load) and sit at a steep angle that doesn't always align perfectly with the geometry of a straight AR bolt. On the other hand, CZ Scorpion EVO magazines feature a robust, curved, double-stack/double-feed design that is incredibly reliable and easier to load.