The Ultimax 100 is a lightweight (SAW) manufactured by the Chartered Industries of Singapore, now by Singapore Technologies Kinetics. Image File history File links Ultimax_LMG.jpg Source: Source:http://212. ... Image File history File links Ultimax_LMG.jpg Source: Source:http://212. ... A squad automatic weapon (SAW) is a light or general-purpose machine gun, usually equipped with a bipod and firing a 7. ...

Design

The Ultimax 100 is gas-operated, firing a 5.56 mm round from an open bolt. Rounds are fed from either a proprietary 100-drum magazine, or from a modified M-16-type 30 round STANAG magazine. There is a two position safety - SAFE, and AUTO. The gas-operated system for implementing automatic reloading of a firearm is one of five such systems, the others being recoil-operated, gatling, chain, and blowback. ... U.S. Military 5. ... A semi or fully-automatic firearm which is said to fire from an open bolt is one where, when ready to fire, the bolt and working parts are held to the rear. ... M16 Type Assault rifle Nationality United States Era Vietnam, modern History Date of design 1957 Production period 1960 to present Service duration 1960 to present Operators NATO War service Vietnam War, Gulf War, 2003_invasion_of_Iraq Specifications Type Assault Rifle Calibre 5. ... STANAG is the NATO abbreviation for Standardization Agreement, which set up processes, procedures, terms and conditions for common military or technical procedures between the member countries of the alliance. ...

An aperture-type leaf-sight adjustable for range is used in conjunction with a round front-sight post. The barrel is fitted with a bayonet lug which accepts any M-16-type bayonet. A gas regulator allows the rate of fire to be varied. The weapon includes a carrying handle, and two adjustable folding legs to provide stability in its sustained-fire role. A bipod is a support device that is similar to a tripod or monopod, but with only two legs. ...

Unloaded, the Ultimax 100 weighs 4.9 kg; with the 100-round drum, it weighs 6.8 kg.

Features

The feature that grants the weapon its reputation from reviewers as very controllable, accurate and low on recoil (as compared to similar LMGs) is the Constant Recoil principle. The overall design allows the bolt carrier group to travel all the way back without ever hitting the rear, instead stopping gradually along the movement during traverse, and was designed by Mr L. James Sullivan (who also assisted in design of the AR-15 of Eugene Stoner fame). This revolutionary feature is a huge advantage in a firefight as it gives the operator a far greater chance of hitting moving targets in a field combat environment. Before the concept was devised, no one believed it was possible for a light weapon to outperform a heavier weapon of the same caliber on an overall basis. The AR-15 is a lightweight, magazine-fed, autoloading centerfire rifle designed by Eugene Stoner of the ArmaLite corporation who developed it as a smaller-caliber version of the AR-10. ... It has been suggested that this article or section be merged with M16_(rifle)#Eugene_Stoner. ...

Variations

The first Ultimax 100 had a fixed heavy barrel. Since then, the Mark 3 incarnation has incorporated better features. Quick-detachable barrels, available in two lengths: standard 508 mm (20") and short 330 mm (13"). In normal use as a SAW, however, there is no need to change barrels.

The buttstock is also quick-detachable, and due to the weapon's relative lightness and low recoil, it is possible to fire the weapon away from the body with the stock removed, thus making it theoretically suitable for close combat and urban operations (For example, attempting to fire around corners). The weapon's bipod can be easily. A stock or buttstock is present in many firearms and some crossbows to transfer the recoil from firing the weapon into the shooters shoulder. ...

In the Mark 3/4 incarnation, the Ultimax 100 can be fed from the aforementioned 100-round drum magazines. STANAG-compatible (M16-type) box magazines can be used as well. However, because the Ultimax 100 uses a different magazine catch from the M-16, the magazines must be modified by drilling two holes on the left hand lip. The drum magazine is great for sustained fire, but can be reloaded only with the help of external tools due to powerful springs. STANAG is the NATO abbreviation for Standardization Agreement, which set up processes, procedures, terms and conditions for common military or technical procedures between the member countries of the alliance. ... M16 is the U.S. Military designation for a family of rifles derived from the ArmaLite AR-15. ... An M16 Magazine Various Mags A magazine (also called a mag) is an ammunition storage device within or attached to a firearm. ...

The Mark 4 variant is being devised, with the clear intent for adoption by the United States Marine Corps, with the addition of a fire selector module (Safe, Semi, Auto) and most likely with the revised Dual-drum C-Mag design, with the translucent Lexan backplate (for visual round observation). It will likely be issued with two heavy barrels and prototypes are apparently extremely usable at the effective range (800 m). Sights are reportedly difficult to use, but added reflex and zoom optics (M68CCO, TA31f ACOG) reportedly work excellently.

Users

The gun is operated by Singapore, fielded in 1982, the Philippines, Honduras and Peru. The Ultimax was submitted to the United States Marine Corps' AR/SAW as Singapore's entry. In the end, USMC officials had chosen the FN Minimi as their official LMG, though several of the testers had found favor with the Ultimax.

External link

• Ultimax 100 CIS Ultimax entry.