Sig Sauer Magazine, 9MM, 30 Rounds, Fits P320, Coyote 8900577 Shoot longer between reloads with this reliable factory 9mm P320 30-round extended magazine. Unlike other extended magazines, this 30-round mag offers the same reliability as the magazine that shipped with your pistol. Also included is a removable sleeve for enhanced comfort when used in a full-size grip module.