The barrel is the most remarkable part of the PPS/50. The drilled barrel-cover gives the carbine a military look. It features a screw fixed base with a dovetail blade front sight and a folding “V” leaf rear site. The operation is semi-automatic, blowback type. Two recoil springs, located behind the bolt, insure the correct closing. The release is locked by a lever type safety. The gun can use three different types of magazine : the drum magazine, the long prismatin magazine and the short prismatic magazine. It features a black M4 style stock and sandblasted and blued metal parts.