The Winchester SXP Shadow Marine Defender applies a hard chrome finish to the SXP pump action for maximum saltwater corrosion resistance. Though pump-action, it shares the SX platform DNA and fills a critical defensive role for coastal users, competing directly with the Mossberg 500 Mariner. Type: Semi-Auto Shotgun Action: Gas-Operated Caliber: 12 Gauge Capacity: 5 Year introduced: 2015, Belgium/Japan Weight: 7.5 oz Overall length: 38.5" Status: Active Intended use: Home Defense, Marine, Tactical