CODE – 01-125-971

NAME – SPP-1 Underwater Pistol

NAME (NATIVE) – Spetsialnyj Podvodnyj Pistolet [Special Underwater Pistol]

TYPE – Pepperbox handgun

COUNTRY OF ORIGIN – USSR

DATE OF MANUFACTURE – 1971

CALIBER – 4x39mmR SPS

OVERALL LENGTH – 24.4 cm (9.61 in)

BARREL LENGTH – 20.5 cm (8.07 in)

RIFLING (TYPE & TWIST) – Smoothbore

BULLET DIAMETER – 4.5 mm dia, 115 mm long (0.177 in dia, 4.53 in long)

BULLET WEIGHT – 13.15 g (203 grain)

MUZZLE VELOCITY – 245 m/s (804 fps) in air

MUZZLE ENERGY – 395 j (291 ft/lb)

WEIGHT (EMPTY) – 0.950 kg (2 lb 1.5 oz)

WEIGHT (LOADED) – 1.03 kg (2 lb 4.3 oz) with 4 round clip

SIGHTS – Open, iron, fixed, Front sight – Blade, Rear sight- Notch

EFFECTIVE RANGE – 20 m (22 yards) in air

In Water 5 Meters (16 foot) depth – 17 m

In Water 20 Meters (66 foot) depth – 11 m

In Water 40 Meters (131 foot) depth – 6 m

OPERATION – Manual, double-action only

TYPE OF FIRE – Pepperbox repeater, 1 round per barrel

RATE OF FIRE – 12 rpm

FEED DEVICE – 1 round per barrel, 4 round clip

FEED DEVICE WEIGHT (EMPTY) – 10 grams (empty 4-round clip)

FEED DEVICE WEIGHT (LOADED) – 0.08 kg (loaded 4-round clip)

BASIC AMMUNITION LOAD – Four 4-round clips (16 rounds)

LOAD WEIGHT – 0.32 kg (11.3 oz)

MANUFACTURER – TsNIITochMash [Central Scientific Research Institute of Precise Mechanical Engineering]

STATUS – In production

SERVICE – Soviet Navy and Spetznaz units, commercial sales

      The lethal range of the dart underwater is determined by its ability to penetrate an insulated (Neoprene) diving suit or a 5mm (0.20 in) thick glass faceplate

Weapon is made of non-corroding materials as much as possible. All metal surfaces are covered with an anti-corrosion coating and all furniture is plastic.