I got to shoot my new Rock Island 9mm today and it shot great. I was just plinking in between 3 Gun stages, so I didn't get to shoot it for groups, but the sights seemed pretty close. Unfortunately the factory magazine with Dawson extension, Arredondo insert, factory spring, and factory follower didn't work too well. If I loaded it to capacity, 20 rounds, I'd get 4-6 rounds off and then start having FTE's and/or double feeds. It cycled factory ammo and my reloads that are tuned for my G34 fine though. I need to get the Arredondo follower and try that out with the extended spring that I already have that didn't fit with the factory follower.