FN F2000 vs M16

2001–Present

1964–Present

~150,000 estimated

8,000,000+ units (including all variants and licensed production)

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

990 mm (39 in) with stock extended; 860 mm (33.9 in) with stock collapsed (carbine)

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

508 mm (20 in) standard; 406 mm (16 in) for carbine variants

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

3.26 kg (7.2 lb) empty, standard rifle; 3.40 kg (7.5 lb) carbine

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

30 rounds standard STANAG; 20, 40, 60 round options and drum magazines available

Short‑stroke gas piston, rotating bolt, closed bolt

Direct‑impingement gas system with rotating bolt, short‑stroke operation

Two‑stage military trigger with fire‑selector lever

Single‑stage military trigger; three‑round burst mechanism on A2/A4 models

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

Standard: detachable carrying handle with integrated rear aperture (M16A1) or flat‑top receiver with Picatinny rail and removable iron sights (A4); front post fixed