FN F2000 vs Steyr AUG

2001–Present

1977–Present

~150,000 estimated

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

790 mm (31.1 in) with stock folded, 860 mm (33.9 in) extended

790 mm (31.1 in) with standard 508 mm barrel

508 mm (20 in) standard, 406 mm (16 in) for compact variants

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

2.95 kg (6.5 lb) empty, 3.45 kg (7.6 lb) loaded

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

30 rounds standard STANAG, 20‑round and 40‑round drum options

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

Short‑stroke gas piston, rotating bolt, closed bolt

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

Two‑stage military trigger with fire‑selector lever

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

Integrated 1.5× optical sight (foldable), backup iron sights, optional Picatinny rail for reflex or night sights

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