The TriStar Viper series is a reliable and versatile gas-operated semi-automatic shotgun, built for hard-working performance. It features a removable choke system compatible with BerettaA(R)/BenelliA(R) Mobil threads and includes three choke tubes (IC, M, F), a choke box, and a wrench. Additional highlights include a manual E-Z Load mag cut-off, a vent ribbed barrel with a matted sight plane, a fiber optic front sight, and a chrome-plated chamber for enhanced durability. A shot plug is also included. This 20-gauge G2 Youth model comes with a two-stock combo: a youth stock pre-assembled on the gun and an adult stock included in the box, along with a 2" barrel extension for added versatility.