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Small arms1982–present
Light machine gun , Squad automatic weapon
Ultimax 100 is a light machine gun , Squad automatic weapon originating in Singapore. It was built by CIS: 1982–2000 ST Kinetics: 2000–present. Reported operators include Bosnia & Herzegovina, Brunei, Chile, Croatia, Fiji, Indonesia, Papua New Guinea, Peru, Philippines, Serbia, Singapore, Slovenia, Solomon Islands, Thailand, United States, Zimbabwe.
SingaporeLight machine gun , Squad automatic weapon
Singapore
1982–present
See Users
Sri Lankan Civil War Bougainville conflict Yugoslav Wars Anti-guerrilla operations in Indonesia & the Philippines 2006 Fijian coup d'état Solomon Islands coup War in Afghanistan
L. James Sullivan for Chartered Industries of Singapore (CIS, now ST Kinetics )
1978
CIS: 1982–2000 ST Kinetics: 2000–present
1982–present
~80,000
See variants
Mark 2: 4.75 kg (10.47 lb) Mark 3: 4.90 kg (10.8 lb) 6.8 kg (15 lb) when loaded 100 rounds
Mark 2: 1,030 mm (40.6 in) with buttstock, 800 mm (31.5 in) w/o buttstock Mark 3: 1,024 mm (40.3 in) with buttstock, 810 mm (31.9 in) w/o buttstock
Standard: 508 mm (20.0 in) Ultimax 100 para: 330 mm (13.0 in)
5.56×45mm NATO
5.56 mm (0.22 in)
Single barrel (progressive RH parabolic twist, 6 grooves)
Gas-operated , rotating bolt
400–600 rounds/min
970 m/s (3,182 ft/s) (M193 cartridge) 945 m/s (3,100.4 ft/s) (SS109/M855 cartridge)
100–1,200 m sight adjustments
460 m (M193 cartridge) 1,300 m (SS109/M855 cartridge)
100-round drum magazine or 30-round STANAG M16 box magazine Mark 9: belt-fed or STANAG magazine
Rear aperture sight and front post 472 mm (18.6 in) sight radius
Bosnia & Herzegovina
Brunei
Chile
Croatia
Fiji
Indonesia
Papua New Guinea
Peru
Philippines
Serbia
Singapore
Slovenia
Solomon Islands
Thailand
United States
Zimbabwe
Reference text from Wikipedia contributors, used under CC BY-SA 4.0.
True scale
Sourced dimensions beside a 1.75 m human reference.
Points represent sourced observations, including revisions. Revisions on the same effective date are not separate inventory events. Ranges appear in the table and are not plotted as exact points.
| Observation / report period | Value | Source | Claim state |
|---|---|---|---|
| 29 Sept 2026 | 1.03 m | Wikipedia contributors | superseded |
| 29 Sept 2026 | 1.03 m | Wikipedia contributors | approved |
Ultimax 100 equipment records. Variants, orders and quantities are shown as reported in each inventory source; coverage is incomplete.
Bhutan
Bosnia and Herzegovina
Brunei
Chile
Croatia
Fiji
Indonesia
Latvia
Morocco
Papua New Guinea
Peru
Philippines
Serbia Singapore
Slovenia
Solomon Islands
Thailand
United States
ZimbabweBosnia & Herzegovina, Brunei, Chile, Croatia, Fiji, Indonesia, Papua New Guinea, Peru, Philippines, Serbia, Singapore, Slovenia, Solomon Islands, Thailand, United States, Zimbabwe
Equipment reference ↗