Sig Sauer P365 Magazine, 9mm 10 Round w/Finger Extension. This Sig Sauer P365 pistol mag is embedded with the highest Sig Sauer standards and holds 10 rounds of 9mm ammunition. This magazine features a finger extension to add better grip and performance, is made of steel, finished in black, and is durable for your everyday compact carry. This magazine is a factory original part that is a perfect replacement to your original worn parts. From the world leader in firearms genuine Sig Sauer parts are designed around the same relentless standards put into every pistol and rifle they make. Kit up, dress up, or replace your original parts with nothing but genuine parts from Sig Sauer.