The Armscor® ACT-MAG Sig P320 9mm 15-Round Magazine is an aftermarket magazine designed for proper fit and function with your Sig Sauer® P320 or P320-M17 pistol. Stainless steel construction combines with a corrosion-resistant blued finish for unparalleled strength and long-lasting field use at the range or during concealed-carry. The anti-tilt polymer follower and steel spring team up for smooth, flawless feeding for consistent operation when you need it the most. Plus, factory-drilled witness holes offer quick round counts on the fly while an impact-resistant polymer baseplate provides added shock resistance. Don't hesitate and order now!