12 or 20 gauge 3 magnum chamber gas-operated semi-automatic shotgun – Flawless performance on all 2 3/4 and 3 shot shells from 7/8 oz to 2 oz loads – Fast Loading System & Smart Valve Piston – Anodized aircraft alloy receiver with 11mm groove for optics mounts – Turkish walnut stock and forend with checkered grip surfaces – Rubber butt pad for recoil absorption with spacers to extend length of pull – Oxidation Proof Chrome plated barrel made with Nickel Chromium and Molybdenum steel – All barrels are proof tested at the factory to ensure maximum durability – 7mm checkered and ventilated anti-glare rib – Brass bead front sight – Steel shot suitable multi choke system with 5 chokes (F IM M IC CYL) – Magazine capacity: 4+1 or 2+1 with migratory plug installed – Stock shims allow adjustment of drop and cast for a better fit – Manual cross-button trigger safety – Mounted sling studs