It will not work with any of the models with the manual safety.
CAA only confirms that the full size and compact P320 handguns will fit this Roni chassis.
The CAA MCK for Sig handguns will not work with any of the M17 or M18 models as they have a manual safety that is not compatible.
So to answer your question it will not fit a Xcompact. The pic rail on the oe has one extra rung on the rail and that’s what clicks and attaches. The Xcompact lacks that rung so it won’t lock into place
Yes, it works with the full size as well as the compact
No, it can not.
The CAA Sig Sauer P320 Pistol Micro Conversion Kit is not compatible with the XTEN Comp.
No, the CAA Sig Sauer P320 Pistol Micro Conversion Kit will not accept slide mounted optics. You must remove your optic in order to use this conversion kit.
Yes, this CAA Sig Sauer P320 Pistol Micro Conversion Kit is the 2.0 model compatible with the the full-size P320, compact & carry models.
The CAA Sig Sauer P320 Pistol Micro Conversion Kit is compatible with P320 Full Size, Compact, and Carry. It is not compatible with the M17, M18, P320 RX, P320 VTAC, or X Series Models.