Caspian custom 1911/2011 magazines and Tanfoglio Large Frame magazines are stocked here from MBX and factory production, covering two platforms most competitors leave out of their lineups entirely. Caspian's custom frames are popular among Limited and Open builders who want a proprietary-tolerance race gun, and these magazines are sized to match Caspian's specific magwell dimensions rather than a generic 2011 pattern. Tanfoglio Large Frame magazines support the Witness and Stock series pistols that IPSC and USPSA Limited/Production shooters have run for decades, with factory-correct feed lips and follower geometry that drop in without modification. MBX's tuned options for both platforms add competition-grade springs and followers for shooters pushing reload speed and reliability past factory-baseline performance. Capacity and tube length are matched to Limited and Open division limits depending on caliber and frame configuration, giving shooters the round count they need without running afoul of division rules. If you're running a Caspian custom build or a Tanfoglio Large Frame pistol, this is one of the few places carrying dedicated magazine support for either platform. Fast same-day shipping on most orders at Shooters Connection.