Caliber: 5.56×45 mm NATO (compatible with .223 Rem) .
Operating system: short‑stroke piston system, which avoids fouling inside the receiver (unlike direct‑impingement AR‑style rifles) .
Barrel length: 14.5″ (36.8 cm) with an A1 flash hider.
Twist rate: 1:7 rifling pitch (optimized for heavier bullets) .
Rate of fire: ~800–1000 rounds/min (semi‑auto only) .
Effective range: around 500 m.
Weight: Approximately 3.01–3.07 kg (~6.6–6.8 lbs).
Stock: 3‑position adjustable stock; overall length adjustable between ~845 mm and 885 mm.
Here’s an overview of the Kral Arms KR556 semi‑automatic rifle, chambered in .223 Remington / 5.56×45 mm NATO, along with its core features and user insights.
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