Sig Sauer P365 Black Oxide XMACRO 9mm Luger Handgun Magazine - 21 Rounds - This factory magazine comes standard with the 21-round P365-FUSE model. This magazine will also work with ALL 9mm P365 models including the standard, X, XL, XMACRO, and AXG-LEGION. This magazine features rear witness holes to confirm loaded capacity, an orange follower that makes it easy to identify when unloaded, and a black baseplate. Compatible with all 9mm P635 models including: P365 Standard P365X P365-XL P365-XMACRO P365-AXG LEGION P365-FUSE