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Microtec MSAR STG-556 rifle (USA)

Microtec MSAR STG-556 rifle with 16 inch barrel and Picatinny rail receiver, with 10-round magazine

 

Type / action	gas operated, rotating bolt
Caliber(s)	5.56x45 mm / .223 Rem, also 6.8x43 mm Rem SPC
Weight unloaded	3.26 kg / 7.2 lbs
Length	686 mm / 27" with 16" barrel
Barrel length	406 mm / 16", also 356 mm / 14" and 508 mm / 20"
Magazine capacity	10, 20, 30 and 42 rounds

Buy MSAR STG-556 rifles and accessories at Impact Guns online store

The STG-556 rifle was developed by US-based company Microtec Small Arms Research, a sister company to famous hi-tech knife-maker Microtec Knives Co. Based on the famous Austrian Steyr AUG assault rifle. Manufacture of this clone became possible because original patents for  Steyr AUG have expired, and the demand for civilian version of this weapon in USA was not covered by import of original Austrian-made rifles. MSAR designers took some time to reverse-engineer the  Steyr AUG, and then added several additional features that they feel might appeal to US shooters. Most notable of these new features are bolt stop release button and Ar-15 style bolt -closure forward assist button on the left side of receiver. Otherwise, the STG-556 follows the  Steyr AUG A2 rifle pattern. Microtec MSAR STG-556 rifle is available in different colors and with barrels of various lengths. Optional caliber conversion kit allows to upgrade the rifle from 5.56mm / .223 to more potent 6.8mm Rem SPC caliber. SAR also offers STG-556 in either semi-automatic only (civilian / police) or selective-fire (military) versions.

Microtec MSAR STG-556 rifle is gas-operated semi-automatic or selective-fired weapon of bullpup configuration. The receiver is made from aluminum alloy, the stock / housing is made from impact-resistant polymer. Barrels are quick-detachable, with barrel lock incorporated into the gas block / forward grip base. Gas system features short-stroke gas piston, located to the right of the barrel. Bolt group rides on dual guide rods, and different user-replaceable multi-lug rotary bolts are available for right- or left-hand ejection. STG-556 is equipped with bolt hold-open device; bolt catch release button is located on the left side of the gun, behind the magazine housing. The M16 / Ar-15 type bolt closure assist button is located on the left side of the gun, in front of the magazine. Non-reciprocating charging handle is located also on the left side, in front of the receiver. STG-556 accepts proprietary Steyr AUG-type magazines, made of plastic; magazine release button is located below the stock, behind the magazine housing. Manual safety is of cross-bolt button style, located above the pistol grip. In military select-fire version, mode of fire is controlled by the pull of the trigger - short pull results in single shots, long pull produces full automatic fire. STG-556 is offered either with Steyr AUG-type 1.5X magnification telescope sight on special detachable mount, or with Picatinny rail (also on detachable base).

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