Sig Sauer Extended Magazine 9mm Luger for P320 M17 M18 Black Coyote Steel

The Sig Sauer MAGMODF921COY is a 21-round extended magazine engineered for the P320-M17/M18 and compatible with all full-size P320 pistols, offering shooters a durable steel construction and a Black/Coyote finish that blends durability with a tactical aesthetic. Designed for 9mm Luger, this extended magazine increases capacity while improving grip purchase and control for competition stages, range sessions, or duty use, and its robust steel body resists wear from repeated loading and ejection. The magazine's spring and engineered follower work together to promote smooth, consistent feeding under rapid-fire conditions, and the extended base provides faster reload manipulation and better purchase for shooters with larger hands or when wearing gloves. Finished to resist surface wear, this Sig Sauer magazine pairs with stock P320 ergonomics without altering function, making it a practical upgrade for those seeking reliable extra capacity and improved handling during shooting drills, training, or on-course competition.