Ultimax 100

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	Weapon: Ultimax 100 Type: Light Machine Gun Country of Origin: Singapore Year Adopted: 1982 Caliber: 5.56x45 NATO Action: Gas Operated Fully Automatic Overall Length (mm): 1030.0 Weight (kg): 4.00 Effective Range (m): 800

The Ultimax 100 is a light machine gun developed in Singapore in the late 1970s by the Chartered Industries of Singapore (now ST Kinetics). Designed by L. James Sullivan, it is chambered in 5.56x45mm NATO and incorporates a unique long-stroke gas-piston operation with a constant-recoil system. This system significantly reduces felt recoil, improving accuracy and controllability during sustained fire. The weapon is lightweight, has a quick-change barrel for versatility, and can use either a drum magazine or standard NATO STANAG magazines, making it highly adaptable to various combat scenarios.

The Ultimax 100 entered production in the early 1980s and has undergone several iterations, including the Mk 2, Mk 3, and Mk 8 variants, which feature enhancements in modularity, weight reduction, and ergonomic design. The weapon has been widely exported and adopted by armed forces in Asia, the Middle East, and South America, in addition to being used by police and paramilitary units. While exact production numbers are undisclosed, it is estimated that tens of thousands have been manufactured, with its reputation for reliability and ease of use contributing to its widespread adoption.

The Ultimax 100 gained notoriety for its exceptional performance in field conditions, earning the nickname "the world's best light machine gun" in some circles. It has been employed in various conflicts, including the Gulf War and counterinsurgency operations, demonstrating its durability and effectiveness. The lightweight design and low recoil make it a favorite among infantry units for mobile operations, and its continued use in modern military forces attests to its enduring relevance in small arms innovation.