The Winchester SXP (Super X Pump) Defender is Winchester's current production pump-action shotgun for defensive use. The SXP uses an inertia-assisted pump action — the recoil of firing helps cycle the action, allowing faster manipulation. The rotating bolt locks into the barrel extension rather than the receiver for a stronger lockup. Ships with a 18-inch barrel and synthetic stock. Type: Shotgun Action: Pump-Action Caliber: 12 Gauge Capacity: 5 Year introduced: 2009, USA Weight: 85 oz Overall length: 38.5" Status: Active Intended use: home_defense, law_enforcement, sporting