AK4D vs FN F2000

1998–Present

2001–Present

~2,500 units (estimated)

~150,000 estimated

950 mm (37.4 in) with stock extended, 770 mm (30.3 in) folded

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

508 mm (20 in) standard, 406 mm (16 in) for AK4 base model

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

3.45 kg (7.6 lb) empty, 3.75 kg (8.3 lb) with bipod and optics

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

30 rounds standard STANAG, 20/40 round magazines compatible

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

Short‑stroke gas piston, rotating bolt, closed‑bolt operation

Short‑stroke gas piston, rotating bolt, closed bolt

Two‑stage military trigger, adjustable pull weight for designated‑marksman role

Two‑stage military trigger with fire‑selector lever

Standard AK4 iron sights (adjustable rear aperture, hooded front post) plus provision for 4×24 telescopic sight and optional flip‑up night sights

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