I'm starting this thread specifically to document light strikes aka Failures To Fire (as opposed to the other FTF) with P320 variants. My Agency is issuing a version of the P320 and I have taken the one day P320 factory armorer's course so I have more than a passing interest.
As documented in other P320 threads over the past few years, I currently have two P320s, a 320 Compact produced in August 2014 (first month of production) and a P320 X-Carry produced Post-upgrade. Both in 9mm.
The "early adopter" compact has had a few issues, I had to install a set of .40 cal sights to get the gun to POA/POI and it had some light strike issues with steel and aluminum cased ammo but had generally been reliable with brass cased factory ammo.
This gun went back to the Mothership in NH for the drop safe "upgrade" and complaints of light strikes. I got it back a couple of months ago and last Sunday I had a LS/FTF with Federal 150 grain sythtec. The primer strike was off center and the round subsequently fired out of a G19X. This was only the second time I've fired this particular gun since it came back from the upgrade.
Until today the X carry had been 100% reliable. I had two LS/FTF in less than 50 rounds with the X carry and Remington brown box 115 FMJ. The brown box has proven reliable in everything else I've tried it in and both rounds subsequently fired, one in the X acrry and one in a G17.