STK 50MG
The STK 50 MG, formerly known as the CIS 50MG, is a gas-operated, air-cooled, belt-fed heavy machine gun developed and manufactured by Chartered Industries of Singapore (CIS, now ST Kinetics) in the late 1980s, in response to a request by the Singaporean Defence Ministry to replace the 12.7mm Browning M2HB machine guns then in ubiquitous service with the Singapore Armed Forces (SAF).
| STK 50MG | |
|---|---|
The CIS 50MG on display during Singapore Army open house 2007. | |
| Type | Heavy machine gun |
| Place of origin | Singapore |
| Service history | |
| In service | 1991–present |
| Used by | See Users |
| Production history | |
| Designer | Chartered Industries of Singapore (CIS, now ST Kinetics) |
| Designed | Mid-1980s |
| Manufacturer | • CIS: 1988–2000 • ST Kinetics: 2000–present |
| Produced | 1988–present |
| Specifications | |
| Mass | 30 kg (66.14 lb) (complete gun assembly w/o feed chute and tripod adaptor) |
| Length | 1,778 mm (70.0 in) with stock |
| Barrel length | 1,143 mm (45.0 in) |
| Width | 190 mm (7.5 in) |
| Cartridge | 12.7×99mm NATO |
| Calibre | 12.7 mm (0.50 in) |
| Barrels | Single barrel (progressive RH parabolic twist, 8 grooves) |
| Action | Gas-operated, rotating bolt |
| Rate of fire | 400–600 rounds/min |
| Muzzle velocity | 890 m/s (2,920 ft/s) |
| Feed system | Single sprocket Belt-fed with dual-feed chutes |
| Sights | Folding leaf sight |
The aim was to have a brand new heavy machine gun design, that fires the same type of .50 cal rounds as the M2HB machine guns and to have the gun parts more readily available in view of easing SAF's chain of logistics and supplies.
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