The Winchester SXP (Super X Pump) Defender in 12 gauge with 18-inch barrel is a home defense pump shotgun featuring a hard-chrome-plated bore, a synthetic stock, and Winchester's rotary bolt system for smooth cycling. The SXP mechanism uses a friction-free rotary bolt rather than the conventional tilting bolt, providing a notably smoother pump stroke. Type: Pump Shotgun Action: Pump-Action Caliber: 12ga Capacity: 5 Year introduced: 2009, USA Weight: 6.25 oz Overall length: 36" Status: Active Intended use: Home Defense, Tactical