AR-15 vs Steyr HK SL6

1964–Present

1980–1990

12,000,000+ units (combined military, law‑enforcement, and civilian production)

Limited production

840 mm (33.1 in) with stock extended (16 in barrel), 730 mm (28.7 in) with stock collapsed (14.5 in barrel)

990 mm

406 mm (16 in) standard, 368 mm (14.5 in) carbine, 508 mm (20 in) designated marksman, 254 mm (10 in) pistol‑length

510 mm

3.2 kg (7.1 lb) empty (16 in barrel, without optics)

3.8 kg

30 rounds standard, 10/20/40/60 round options, drum magazines up to 100 rounds

5 or 10 rounds

Direct‑impingement gas system (original) or short‑stroke gas piston (aftermarket/variant), rotating bolt, semi‑automatic or select‑fire

roller-delayed blowback

Single‑stage semi‑automatic trigger; military select‑fire models use a two‑stage fire selector with safe, semi, burst, and automatic modes

single-stage

Standard: detachable flip‑up rear iron sight and fixed front post; many models equipped with Picatinny rail for optical, holographic, or night sights

Iron sights or optics-ready