So, for those P320s that have an "X" somewhere, somehow associated with the gun or the parts, what constitutes and "X" versus a "non-X" gun or part?

Seems like with the guns is one or more of these but not all necessarily.

1. Optic ready slide cut (recently)
2. Flat trigger (mostly, possibly enhanced)
3. Extended slide release (maybe)
4. Squarish grip module (usually)
5. "X" slide banner (sometimes, the X-series slide doesn't seem to have an "X" banner)

There were two versions of the 320 X carrys.

The main differences between the two is the original, had the optic cut only for Sig Romeo optics, and the barrel and slide were match. You couldn't use a standard barrel with the slide.

The newer, I don't recall when the changes were made, but the optic cut was redone to accept the Romeo and Delta Point Pro optics, and they used the standard barrel and slide setup like the other 320s in the line.

Everything else about the pistols were the same, flat trigger, grip modules etc. Slide releases were the same on all of them.



TXPO