2011 complete magazines are pre-assembled, tuned, and ready for USPSA Open, Limited, Limited Optics, and Carry Optics shooters running 2011-pattern pistols. Each magazine arrives with the spring, follower, and base pad installed, so you load it and run it. Options include 9mm, .38 Super, .40 S&W, and .45 ACP magazines in 140 mm and 170 mm lengths, with steel and polymer bodies, for reliable feeding and fast reloads. Fast same-day shipping on most orders at Shooters Connection.