Sig Sauer P226, P229, and P320 X5 magazines are stocked here from Mec-Gar and Sig factory production, covering the platforms Production, Carry Optics, and Limited shooters rely on across USPSA and IDPA competition. Mec-Gar's Sig-pattern magazines meet the same manufacturing tolerances used across their competition magazine lineup, giving P226 and P229 shooters a reliable feed lip and follower combination for club matches and majors alike. The P320 X5, purpose-built for competition with its full-size grip module and optic-ready slide, gets dedicated magazine support sized to its extended capacity for Carry Optics and Limited division use. Genuine Sig factory magazines offer a guaranteed drop-in fit for shooters who want zero variability, while Mec-Gar options bring tuned springs and followers for those chasing faster, more reliable reloads under the clock. Capacity and tube length across this lineup are matched to each model's division-legal round count, from standard P226/P229 double-stack capacity to the X5's extended competition-focused magazines. Whether you're running a duty-pattern Sig in Production or a full X5 build in Limited, this is where to find magazines built for your exact model. Fast same-day shipping on most orders at Shooters Connection.