The Wilson Combat® 1911 Elite Tactical Heavy Duty/+P.45 ACP 8-Round Magazine With Aluminum Base Pad is specifically designed for tactical and competition performance. It has an aircraft-grade stainless steel body with.25″-thick walls for superior strength and long-lasting corrosion resistance. Exceptionally smooth feeding and lightning-fast insertion into the weapon are delivered by a multi-step tumbling and finishing process, which also increases reliability in the field. A high-tensile stainless steel spring and self-lubricating, extended-skirt polymer follower ensure smooth, reliable feeding performance. Even better, factory-installed aluminium base pads provide improved corrosion and shock resistance, and witness cuts with factory numbers provide easy, visual round counts at a glance.