Pro Mag SIG-A15 9mm Luger 15-Rd Magazine - SIG P320 Sub-Compact - Blued Steel

The Pro Mag SIG-A15 is an extended 15-round aftermarket magazine for the SIG Sauer P320 Sub-Compact chambered in 9mm Luger. Its heat-treated steel body carries a corrosion-resistant black oxide (blued) finish, paired internally with a chrome silicon spring and an injection-molded follower for smooth, reliable feeding. A grip sleeve extension is included for added control and a more secure purchase.