SPP-1 underwater pistol
| SPP-1 | |
|---|---|
SPP-1M | |
| Type | Underwater pistol |
| Place of origin | Soviet Union |
| Service history | |
| In service | 1975–present |
| Used by | Russia |
| Production history | |
| Designer | Vladimir Simonov at TsNIITochMash - ЦНИИТочмаш (Central Scientific Institute for Precision Machine Building) |
| Designed | 1960s (Late) |
| Manufacturer | TOZ (Tulsky Oruzheiny Zavod) (Тульский Оружейный Завод) Tula Arms Plant |
| Produced | 1971–present |
| Variants | SPP-1M |
| Specifications | |
| Mass | 950 grams (34 oz) empty, 1,030 grams (36 oz) loaded |
| Length | 244 millimetres (9.6 in) |
| Width | 37 millimetres (1.5 in) |
| Height | 136 millimetres (5.4 in) |
| Cartridge | 4.5×40mmR |
| Caliber | 4.5 millimetres (0.18 in) |
| Action | double action |
| Muzzle velocity | 240 to 250 metres per second (790 to 820 ft/s) in air |
| Effective firing range | in air, 15 to 20 metres (49 to 66 ft); in water, |
| Feed system | 4 barrels with a cartridge in each |
The SPP-1 underwater pistol was made in the Soviet Union for use by Soviet frogmen as an underwater firearm. It was developed in the late 1960s and accepted for use in 1975. Under water, standard bullets are inaccurate and have very short range. This pistol instead fires a round-based 4.5 millimetres (0.18 in) caliber steel dart about 115 millimetres (4.5 in) long, weighing 12.8 grams (0.45 oz), which has longer range and more penetrating power than a speargun. The complete cartridge is 145 millimetres (5.7 in) long and weighs 17.5 grams (0.62 oz).