12 Gauge. 20 Gauge. K9A00169. 3" chamber length. Cylinder bore. Matte black finish overall mounting black rubber pistol grip to black synthetic stock with vented recoil pad and rubbed pump handle with a length of picatinny rail to tip. Slide action repeating shotgun fed by a tube magazine and featuring a spring assisted action. Importer mark to the barrel reads TSA-NKC-MO to left barrel. Shotgun shows TriStar logo to flanks of the receiver.