ACT-MAG / ARMSCOR SIG SAUER P250, P320 - M17 9mm 15 ROUND LIMITED MAGAZINE 3210. This is a full sized magazine limited to 15 rounds for the jurisdicitions that have a 15 round magazine capacity limit.
NOTE THE 15 RD VERSION WILL HAVE A DIMPLE IN THE SIDE OF THE MAGAZINE TUBE TO PREVENT INSERTION OF MORE THAN 15 ROUNDS. This is for the full size pistol it isn't a P320 Compact magazine.