POTD: Four Calibers, One Platform - The PSA Soviet Arms Krink

Few firearms carry as much mystique as the AKS-74U. Fielded by Soviet forces in Afghanistan starting in the early 1980s, the stubby little Krinkov bridged the gap between a submachine gun and a full-length rifle, and it became one of the most iconic compact firearms of the Cold War era. Palmetto State Armory has been building American-made versions of that concept under their Soviet Arms banner, and the lineup has grown to cover four calibers on the same stamped-steel platform.