Bushmaster M17S vs Steyr AUG

1992–2005

1977–Present

Limited production

~500,000 units (estimated, including licensed variants)

762 mm

790 mm (31.1 in) with standard 508 mm barrel

457 mm

508 mm (20 in) standard; 407 mm (16 in) carbine; 350 mm (13.8 in) submachine gun variant

3.5 kg

3.6 kg (7.9 lb) empty with standard optic and 30-round magazine

30 rounds

30-round detachable box (standard); 42-round optional

gas-operated

Gas-operated, short-stroke gas piston, rotating bolt

single-stage (noted for stiffness)

Two-stage trigger: first stage semi-automatic, second stage full automatic

Integrated rail

Integrated 1.5x or 3x optical sight in carry handle (A1/A2); Picatinny rail for iron sights or optics (A3/A3 M1)