Sig Sauer P365 X-Macro 9mm 21-Round Magazine

This is a factory original SIG P365 X-Macro 9mm 21-round extended magazine. 

Packing a healthy 21-round capacity and compatible with all 9mm ammo types, this factory OEM magazine features heat-treated stainless steel construction, machined to ultra-tight specifications for a precise fit and reliable operation. A durable, corrosion-resistant blacked-out finish protects against scratches, rust, and other wear, while numbered witness holes facilitate fast and accurate round counts at a glance. The factory-installed polymer floor plate serves as a bumper pad for exceptional shock resistance. 

Better yet, the high-visibility polymer follower, high-tensile steel spring, and precision-machined feed lips ensure smooth and consistent feeding operation you can depend on when and where it matters most.