I just got off my butt and finally ordered my Mechtech 10mm CCU for use with my Dan Wesson Razorback pistol as the lower.
Here was the very first target I was shooting, with about 3 mags worth of ammo. The vertical sringing was from me setting the red dot scope elevation. (Hard to do, as dummy me forgot to bring a screwdriver, that's why I didn't also adjust windage)Target was 25 yards, I will sight it in longer next time. Operation was flawless, no failures to feed or fire. The only fault I find with it was the bolt does not lock back after the last round is fired. I was pulling trigger on empty mag a lot if I was not counting carefully.