This is a factory .40 S&W/.357 Sig 10-round magazine for Subcompact with Sig P320/P250 pistols.
Sig Sauer’s P320 pistol (based on the P250 frame) is the Army’s new sidearm of choice, and the ultimate in striker-fired, modular handguns—thanks in no small part to its reliable factory magazine.
Designed for subcompact P320/P250 pistols chambered in .40 S&W/.357 Sig feature the same durable carbon steel construction and special anti-friction coating as Sig’s full-sized factory magazines. Keep a few backup magazines handy for concealed carry or trips to the range.
Remember to rotate your loaded magazines every 3-6 months in order to avoid unnecessary wear and tear.