This is a factory .40 S&W 7-round magazine for Sig Sauer P239 pistols.
Sig Sauer P239 combines the combat-proven design of Sig P220-series pistols with a compact package that’s optimized for concealability.
These magazines give you 7 hard-hitting rounds of .40 S&W in a blued stainless steel body with grip-extending polymer baseplate and specially cut witness holes for each round. Designed for maximum reliability and smooth reloads, these magazines are built to the same exacting specifications as the mags that came with your gun.
Remember to rotate loaded magazines every 3-6 months in order to maximize their lifespan.