I have a fairly fresh early production MP9 full size. The trigger cleaned up easily and and is pretty decent after awhile, but the reset sucks if that's your thing. It is very comfortably to shoot for me, Mine has a stoppage maybe once every couple thousand rounds, and my mags of multiple revisions work fine with brass case ammo but after maybe 10 cycles with dirty steel-case they occasionally get hung up feeding. The accuracy is okay for range work, but very ammo-picky and some ammo will only shoot about 6" groups while some shoots 3" groups with a flyer 1 in 5, pretty normal for an M&P.