ProMag SIGA8 Sig 9mm Luger P320 17rd Black Oxide Detachable Magazine

The ProMag SIGA8 is a 17-round detachable 9mm Luger pistol magazine built as a replacement or spare for the Sig Sauer P320. The magazine body is constructed of heat-treated steel with a black oxide (blued) finish, paired with an injection-molded polymer follower, lock plate, and base plate for reliable feeding.

Designed to drop into the standard Sig P320 pattern, this ProMag Standard series magazine offers a high-capacity option for range, training, and duty use. The all-steel construction provides durability and a solid feel in the grip, while the precision-fit components keep function consistent round after round. Built in the USA to ProMag's quality standards.