Adaptive Combat Rifle
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The Adaptive Combat Rifle is a modular assault rifle formerly designed by Magpul Industries of Austin, Texas, and known initially as the Masada. Wikipedia
Action: Gas-operated, rotating bolt
Barrel length: 8.25 in (210 mm) (Remington ACR); 10.5 in (267 mm); 14.5 in (368 mm) (Remington ACR); 16.5 in (419 mm); 18.5 in (470 mm)
Designed: 2006
Effective firing range: 500 m (550 yd) for point target; 600 m (660 yd) for area target
Feed system: 30-round M16-compatible STANAG magazines
Manufacturer: Remington Arms (Military); Bushmaster (Civilian)
Mass: 7.9–9.8 lb (3.6–4.4 kg)