The Mark XIX Pistol has a new caliber in the .429 DE based on the .50 AE case necked down to .44. Comes with a stainless steel frame and slide; Picatinny bottom rail, Weaver-style top rail; integral muzzle brake, black appointments with 6" barrel and 7-round magazine. A variety of accessory barrels are available in carbon steel in matte black, with Cerakote finish or stainless steel.