Sig Sauer Magazine P365, X-Macro Ext. 9MM 21rd, Black - 8901594

You read that correctly; this is a 21-round magazine for your P365 series pistol!Constructed from anti-friction-coated steel, this magazine is ready to withstand some serious use. Inside, you'll find an anti-tilt polymer follower and high-quality steel spring that work together perfectly to ensure your rounds are properly aligned and feed flawlessly.On the back of the magazine are precision-cut rear-facing witness holes that allow you to easily keep track of all 21 rounds. So whether you're usin