SIG SAUER X-Macro Extended SIG Sauer P365 9mm Luger 21 Round Pistol Magazine Black. 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. Specifications for Sig Sauer X-Macro Extended Sig Sauer P365 9mm Luger 21 Round Pistol Magazine: Manufacturer: SIG SAUER Gun Make: SIG Sauer Gun Model: SIG Sauer P365-FUSE Sig Sauer P365-AXG Legion SIG Sauer P365 X-Macro SIG Sauer P365X SIG Sauer P365 XL SIG Sauer P365 Caliber: 9mm Luger Magazine Capacity: 21 Round Finish: Oxide Fabric/Material: Steel Size: Compact Gun Type: Pistol Magazine Type: Double Stack Package Contents: Sig Sauer X-Macro Extended Sig Sauer P365 9mm Luger 21 Round Pistol Magazine SIG SAUER Infinite Guarantee What firearm models does the manufacturer say Sig Sauer X-Macro Extended Sig Sauer P365 9mm Luger 21 Round Pistol Magazine is compatible with? The manufacturer suggests that Sig Sauer X-Macro Extended Sig Sauer P365 9mm Luger 21 Round Pistol Magazine is compatible with SIG Sauer P365 SIG Sauer P365 XL SIG Sauer P365X SIG Sauer P365 X-Macro Sig Sauer P365-AXG Legion SIG Sauer P365-FUSESIG SAUER 8901594: X-Macro Extended SIG Sauer P365 9mm Luger 21 Round Pistol Magazine Black