I've spent the last day or so pouring through searches and we have about 80 threads on the P320 and none of them answer my questions. Sig isn't particularly helpful, because they constantly make changes and move things around. I figured it's time for a universal thread that stores these data:
1) What are the Fire Control Unit variants available for the P320?
2) What are the grip module sizes available for the FCU variants?
3) What are the slide and barrel lengths available?
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As near as I can tell
1) There are two main FCUs - the non-manual safety version and the manual-safety version
2) There are grip modules that vary in grip size and dust-cover length.
"Carry" length is the shorter dustcover and comes in small, medium, and large grip sizes
"Full Size" length is the longer dust cover and comes in small, medium, and large grip sizes
What are the differences if any between the X-series grips? It appears the X-Five is even larger than a Full-Size? - It appears to just be the ability to add a magwell and grip weight?
3) Barrel and Slide Lengths - Appears to basically be "carry" length, which in 9mm is 3.9" and "full-size" in 9mm is 4.7", and "X-Five" in 9mm is 5" - Is this correct?
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General question - does the manual safety simply block the trigger or does it lock/block the striker?