Sig Sauer P365 XMacro X-Change, Fits Sig P365, 3.1 Barrel with Integrated Compensator, X-Ray Night Sights, Optic Ready, 17 Rounds, 2 Magazines 8901443 The wait is over for the P365X Macro X-CHANGE KIT in 9mm with integrated compensator slide. This kit comes with the X-Macro compensated slide in Nitron (Black) finish (optics-ready) with 3.1" 9mm Nitride barrel and X-Macro black grip module with interchangeable backstraps. Also included is two 17rd magazines (with high-visible follower). Slide is cut for the SIG RomeoZero" RMSc or Holosun 507K Reflex optics and similar in length to the XL slide.