MasterPiece Arms, manufacturers of MAC 10 and the MPA Protector Series pistols, continue to evolve the Protector series of concealed carry pistols. Multiple new features enhance the look, feel and performance of these .380 ACP pistols. A beavertail was added to the pistol to eliminate any slide bite and enhance the overall grip-ability of the pistol. New square serrations on the stainless and 4140 black steel slides built from a solid billet provide a more positive grip, with or without gloves, when racking the slide. Barrel porting significantly reduces the felt recoil by bleeding gas from the barrel when the weapon is fired. Finally, fully machined aluminum grips, hardcoat anodized, are included on the Stainless, Premium and Coyote Brown models.