Shot 200 rounds this morning. Mostly 147 Grain Remington Golden Saber, with some 147gr truncated cone FMJ mixed in.
Not one issue. The Trijicon front sight needed to be shifted left just a hair initially but then all was normal. Accuracy is exactly the same on the 6906 frame as it would be on a 915 frame, which I expected. One of my aftermarket mags gave me fits, so I hung it from a branch and shot it full of holes.
All told, this was a cool little adventure, making a S&W third gen "CCO" 9mm. I think total cost (factoring in the 6906 slide I sold and the 915 slide I bought) was almost exactly the same as a decent 6906 ($500ish).
Carrying it in a Desantis pancake right now.