Sig Sauer P365 Cal-X P365 Fuse 9mm 4.3" Bbl Optic Ready Blk (1)17rd Steel Mag & (1) 21rd Steel Mag X-Change Kit CALX-365XF-9-BXR3

The SIG SAUER P365 Cal-X FUSE conversion kit (CALX-365XF-9-BXR3) transforms a non-manual-safety P365 into a full-function FUSE/XMACRO platform, delivering the control and sight radius of a larger pistol while retaining the P365’s compact footprint. The kit pairs a precision 4.3″ carbon-steel barrel and an optic-ready FUSE slide (with XRAY3 day/night sights and a removable SIG-LOC sight plate) with an XMACRO-style grip module that adds a 1913 accessory rail and interchangeable backstraps for a personalized fit. Included are one 17-round and one 21-round steel XMACRO magazine, giving you both high-capacity and range-friendly options right out of the box. Designed for shooters who want the ballistics, ergonomics, and red-dot capability of SIG’s FUSE family without replacing their serialized lower, this Cal-X kit is a practical, factory-engineered upgrade for everyday carry and range performance