Action / system: Inertia‑driven semi‑automatic (inertia spring system). 
Gauge / chamber: 12‑gauge, 76 mm (3″) chamber (listings also show 12/76).
Receiver: 7075 aluminium, matte black anodized finish (black option). 
Barrel: 4140 steel (processed from full material), chrome‑lined bore on many retailer descriptions; available barrel lengths 66 / 71 / 76 cm (≈24″, 28″, 30″) depending on package. 
Stock / furniture: Synthetic stock (black). 
Capacity: 4 + 1 (standard magazine configuration). Confirm local legal limits with your dealer.
Chokes: Supplied with a 5‑piece active / mobile M‑choke set on many packages. Some cantilever/cantilever‑combo variants may have fixed choke options.
Weight: ~3.0 kg (varies slightly with barrel length and extras).
Sight / rails: Many listings show a fibre‑optic front sight and dovetail or 22 mm Picatinny options on cantilever/combo versions. 
Extras / packing: Hard/plastic case, multiple butt‑pads (on some retailer bundles), enlarged bolt release and forward safety on some variants; slug barrel and adjustable rear‑sight options available on combo packs.