While Sig Sauer introduced their new 17+1 P365 XMacro just a couple of months ago, most thought it would be at least a year or longer before they made the grip module or mags available separately. However, as there are a couple of million P365s out there, it makes quick sense as anyone that already has an old P365 can just buy the new mags– Sig is shipping them complete with extension sleeves to fit standard, P365X and P365XL grips– and call it a day. The bad news is the mags are $59 a pop.
For those who already have a P365XL-length slide assembly, they can just pick up an XMacro grip module, no FFL required, for $79 then buy as many mags as they want.