The APS is a fully automatic underwater assault rifle designed for Soviet Navy combat swimmers. It fires long steel bolts that are stable underwater but tumble rapidly in air, making it ineffective on land beyond very short range. Designed to engage enemy divers at close range underwater where conventional weapons fail entirely. Type: Rifle Action: Semi-Automatic/Full-Auto Caliber: 5.66x39mm Capacity: 26 Year introduced: 1975, Soviet Union Weight: 7.6 oz Overall length: 35.2" Status: Discontinued Military use: Yes Intended use: Military, Underwater Combat