CODE – 01-125-965

NAME – S4M

NAME (NATIVE) – C4M

TYPE – Suppressed double-barreled derringer

COUNTRY OF ORIGIN – USSR

DATE OF MANUFACTURE – 1965

CALIBER – 7.62x63mm PZAM

OVERALL LENGTH – 14.7 cm

BARREL LENGTH – 8.8 cm

RIFLING (TYPE & TWIST) – 4-grooves, right-hand twist, 1 turn in 36.9 cm (1 turn in 14.53 in)

BULLET DIAMETER – 7.85 mm (0.309)

BULLET WEIGHT – 8 g (122.5 grains)

MUZZLE VELOCITY – 170m/s (557 fps)

MUZZLE ENERGY – 114 j (84 ft/lb)

WEIGHT (EMPTY) – 0.60 kg (1 lb 5.2 oz)

WEIGHT (LOADED) – 0.64 kg (1 lb 6.4 oz)

SIGHTS – Open, iron, adjustable, Front sight – blade, Rear sight – Adjustable notch

EFFECTIVE RANGE – 15 m (16 yards)

OPERATION – Manual

TYPE OF FIRE – Manual, single action, manual cocking

RATE OF FIRE – 6 rpm

FEED DEVICE – 2 round clip

FEED DEVICE WEIGHT (EMPTY) – 0.004 kg (empty clip)

FEED DEVICE WEIGHT (LOADED) – 0.034 kg (1.2 oz) 2 rounds and clip

BASIC AMMUNITION LOAD – Three 2-round clips (6 rounds)

LOAD WEIGHT – 0.102 kg (3.6 oz)

MANUFACTURER – Tula KBP

STATUS – Obsolescent

SERVICE – Soviet Intelligence Services

     A lever at the base of the pistol grip is pulled down (from the rear) and moved forward to cock the internal hammer.