.40 S&W and 10mm 2011 magazines built for Limited Major competition are stocked here from MBX and SVI, sized to the wide-body 2011 frame for shooters running heavier-caliber Major loads. These magazines are designed around the larger case diameter of .40-caliber cartridges, with feed lip geometry and follower profiles tuned to prevent the rim-lock and feed hesitation issues that undersized or poorly-tuned magazines introduce under recoil. Tube lengths and capacities are built to maximize round count within USPSA Limited division limits, giving shooters the fewest reloads possible across a stage while staying legal. Spring rates are matched to the added mass and pressure of .40 S&W Major loads, keeping the follower cycling consistently from a full magazine down to the last round. These magazines drop free cleanly from 2011 magwells without the tuning some aftermarket options require, and base pad and floorplate options add a secure gripping surface for fast reloads under time pressure. If you're running a .40-caliber 2011 for Limited Major, these are the magazines built specifically for that caliber and division combination. Fast same-day shipping on most orders at Shooters Connection.