SIG SAUER Cal-X P365XL X SER 9mm Caliber Conversion Kit 1 12 Round Magazine Black. Specifications for SIG SAUER Cal-X P365XL X SER 9mm Caliber Conversion Kit: Manufacturer: SIG SAUER Color: Black Gun Make: SIG Sauer Gun Model: SIG Sauer P365X SIG Sauer P365 XL SIG Sauer P365 Caliber: 9mm Luger Magazine Capacity: 12 Round Package Contents: SIG SAUER Cal-X P365XL X SER 9mm Caliber Conversion Kit What firearm models does the manufacturer say SIG SAUER Cal-X P365XL X SER 9mm Caliber Conversion Kit is compatible with? The manufacturer says that SIG SAUER Cal-X P365XL X SER 9mm Caliber Conversion Kit is compatible with SIG Sauer P365 SIG Sauer P365 XL SIG Sauer P365XSIG SAUER 8901442: Cal-X P365XL X SER 9mm Caliber Conversion Kit 1 12 Round Magazine Black