TriStar Raptor Field Compact Black 20 Gauge 3in Semi Automatic Shotgun - 24in - The TriStar Raptor Series is a gas-operated shotgun. It features a highly durable molded stock and forearm, with a zero-plane stock for better feel. The Raptor also features mag cut-off, quick shot plug removal, chrome-lined chamber & barrel and swivel studs. Included are 3 Beretta/Benelli Mobil style choke tubes (IC, M, F). This 20 gauge Field Compact model has a 24in barrel and receiver with a black finish and a stock and forearm with a Muddy Girl finish.