The Type 85 submachine gun is a simple
blowback weapon that fires from an open bolt. The weapon's mechanism was partially based on the Type 64. Parts made for the regular and suppressed version are interchangeable, except for the barrels. The safety and fire mode selector lever is located at the right side of the trigger unit, above the trigger guard. The Type 85 allows for single shots and full automatic fire, which is indicated in the receiver 0, 1 and 2. The weapon is optimized for special
7.62×25mm (Type 64) ammunition with heavy, subsonic bullets, but can also fire standard 7.62mm Type 51/7.62×25mm TT ammunition (with increased loudness). There was a 5.8mm version being researched for potential adoption, but it was never adopted into service. The Type 85 SMG is fed using the same 30-round box magazines as the Type 64 SMG. There is also a steel shoulder stock, which folds to the right side. ==Variants==