The Griffin Armament MK2 PSD is a semi-automatic AR-pattern pistol chambered in .300 AAC Blackout, built on Griffin's fully ambidextrous MK2 lower receiver with mirrored controls for both right- and left-handed use. It has a 9.5-inch threaded barrel, a pistol-length gas system, and a suppressor-optimized buffer system, with an SBA3 pistol brace and an A3 grip. Sources for this UPC disagree: one describes a standalone suppressor, but the titles and majority of source detail describe a complete 30+1 pistol, so only the pistol facts are used here.