For fans of 1911-style handguns, the SIG Sauer P938 offers one of the smallest carry-ready packages on the market chambered in 9mm and equipped with a single-action trigger and a manual safety. However, the limited magazine capacity makes range practice a chore, and having only six rounds on tap can be detrimental in both practice and personal-defense. These aftermarket, all-steel magazines are built to enhance any P938 owner's capabilities. The SIG Sauer P938 steel magazine is designed for use with 9mm cartridges only and have a magazine body made from heat-treated carbon steel. The magazine is treated with a black-oxide finish that combats corrosion and premature wear. Ins Mfg: Pro Mag