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[1]
Used by
See Users
Production history
Designer
Chartered Industries of Singapore (CIS, now ST Kinetics)[1][2]
Designed
Mid-1980s[1]
Manufacturer
• CIS: 1988–2000[1] • ST Kinetics: 2000–present[1]
Produced
1988–present[1]
Specifications
Mass
30 kg (66.14 lb) (complete gun assembly w/o feed chute and tripod adaptor)[1][3]
Length
1,778 mm (70.0 in) with stock[1]
Barrel length
1,143 mm (45.0 in)[1]
Width
190 mm (7.5 in)[3]
Cartridge
12.7×99mm NATO[3]
Calibre
12.7 mm (0.50 in)[1][3]
Barrels
Single barrel (progressive RH parabolic twist, 8 grooves)[1]
Action
Gas-operated, rotating bolt[1]
Rate of fire
400–600 rounds/min[1]
Muzzle velocity
890 m/s (2,920 ft/s)[1]
Feed system
Single sprocket Belt-fed with dual-feed chutes[1]
Sights
Folding leaf sight[1]
The STK 50 MG, formerly known as the CIS 50MG,[a] 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).[2][4][5]
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.[1]
^ abcdefghijklmnopqRichard J, 2008.
^ ab"50MG Product Brochure" (PDF). ST Engineering. Archived from the original (PDF) on 19 February 2009. Retrieved 11 September 2008.
^ abcdAndrew C, 1989.
^"Maximum Firepower: The Machine Guns of the SAF". Singaporean Defence Ministry. 7 June 2008. Archived from the original on 4 August 2012. Retrieved 14 July 2010.
^"STK 50MG". Military Today. Retrieved 8 July 2021.
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