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USPSA Mag / Magazine Gauge by EGW
Are your mags legal?
EGW is the official manufacturer of the USPSA magazine length gauge to be used at all major matches and tournaments.
CNC machined out of 6061 aircraft grade aluminum, the gauge is then anodized black. It measures both 140mm (141.25mm) and 170mm (171.25mm) length magazines. The gauge fits all known combinations of magazines and basepads.