No, not stock. Accuracy out of the box was excellent, and the trigger was better than I expected (better than a stock Glock) but I had already ordered a Apex competition trigger kit for it, before it arrived. The Apex made it even better.
Out of the box it shot low, so I ordered the correct Dawson Precision fibre optic front sight for it. It was lower than stock (so gun would shoot higher) and narrower than stock) so my old eyes had more light to center it with.
I own a lot of pistols and have tried a dozen or so different ones in CQB. For whatever reason, this is the one that shoots best when I want to shoot accurately, quickly.
In the video you can see I shot a bit too fast on the second target and I only got 4 scoring hits on it, but in this video i was shooting as fast as I could, and accuracy was still good. With slow aimed fire, all 10 shots would be touching.
With each pistol I try a variety of bullets and powder charges to see what shoot best. This one did much better with 155 gr lead SWC bullets with 3.3gr of TiteGroup. A mild load with a bullet that I would not normally test, but I happened to have some left from an earlier project. The mild load helps when you want to shoot fast.
I also have a M&P9. It shoots almost as well as this M&P40. I have an Apex trigger and DP front sight on order for it. I am hoping I can get my daughter to shoot CQB with me. She really liked my 40 when she tried it. She can't have it, but would never know the 9 is not the same gun. Shhhh.