Winchester Repeating Arms Super X, Pump Action, 12 Gauge, 3 Chamber, 28 Cylinder Barrel, Blue Finish, Synthetic Stock, Bead Sights, 4Rd 512251392 Pick up the new Winchester(R) SXP shotgun and experience the light weight, centered balance and instant pointability firsthand. The Super X design provides you with the fastest follow-up shots. No other pump offers the feeling of an inertia-assisted slide-action that can deliver three shots in a half second.