Caliber / chamber: 12-gauge — accepts 2¾″ and 3″ shells.

Barrel: typically 20″ (50 cm) on the AS-101 / retail models.

Action / feed: gas-operated semi-auto, box-magazine fed (2/5/10 round mags commonly available).

Weight: ~3.4–3.6 kg depending on config.

Finish: red options appear both as factory limited finishes and as aftermarket Cerakote “battleworn” jobs.

“Red” can mean a factory limited color or a custom Cerakote — confirm whether the finish is factory or aftermarket and whether any warranty is affected.

Legal status and magazine/feature limits vary widely by country — confirm local rules before buying. Some listings are marked “prohibited” or restricted in Canada and other jurisdictions.