Grab an extra mag for everyday carry or the range with the Sig Sauer® P320™ X-Five 9mm 21-Round Magazine. This factory magazine features carbon steel construction with an anti-friction coating for superior strength and durability for lasting field service in virtually any environment. The high-tensile steel spring and durable polymer follower ensure smooth, reliable feeding while the numbered witness holes provide quick, accurate round counts at a glance. Sig Sauer’s P320 pistol (based on the P250 frame) is the new sidearm of choice for American fighting forces, and the ultimate in striker-fired, modular handguns thanks in no small part to its reliable factory magazine. These magazines are ideal for home defense, trips to the range, or any use where a few extra rounds could make all the difference. Order today!