I have been running one for a few months now approaching the 1000 round mark. To put it simply, the 320 has surpassed my expectations. It is very close in size to the G19, it is obvious Sig built the compact to compete directly with the 19. Accuracy has been outstanding with it. It easily matches most of my 1911's and is better than all but one of my glocks.
Reliability has been as good as any of my glocks, zero issues what so ever. Durability, only time will tell on that one, but at this point I see no reason to believe it would have anything but a long service life. Recoil and the high bore axis is going to subjective with each shooter. For me, it is a non issue and it is right inline with my 19.
The trigger is very good. Mine was a little gritty when it arrived. It is very 1911's ish now. I still think the PPQ has a better trigger overall, but the 320 is very close after a few rounds breaking it in. I spent a lot of time looking over the fire control parts and actually worked mine over a bit. My trigger breaks right at 5.5 constantly, with no creep, no grit, and a clean break and reset. The trigger on the 320 has a ton of potential as far as what can be done to it for competition.
The only thing I can ding it for it the overly large take down lever. I feel like it needs to be a bit less intrusive. I have an extra one right now that I am modifying to be a bit smaller. Other than that, it is an excellent pistol, and has won me over. I have been carrying Glocks for most of my LE career. The 320 was intended to be a supplemental weapon to my duty glocks, but has now actually replaced them. While I am not getting rid of any of my Glocks, I carry my 320 on duty every day.
I highly recommend the 320, especially to anyone looking at moving into the polymer pistol market. For all the love i have for Glocks, I can honestly say the 320 has their number. The 320 stands poised to get back into the LE market in a big way. In my department alone, 9 officers have converted from Glocks to the 320.
TXPO