The Type 81 is a gas operated, magazine fed, semi-automatic rifle. It uses a short-stroke gas piston, located above the barrel, and a two-position gas regulator. The bolt group (of the rotating bolt type) is borrowed from the Type 63 rifle. Type 81 rifles also retains the Type 63 bolt hold-open device, which catches the bolt in the open position after the last round has been fired from magazine. The fire selector – safety switch is located at the left side of the receiver, just above the pistol grip, and can be easily operated with the right hand thumb. The open sights are marked from 100 to 1000 meters.
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