Just received my Rock River slide the other day for my bullseye service pistol build. All my bullseye guns are 6" so I'm building a 5" to meet the regulations for service pistol. Kart gunsmith barrel lock up is great test fired last nights match. I had a few issues the recoil spring (16.5) too strong needs a 15, the ejector needs tuning and the chamber too shallow I took care of the chamber today after work.
Waiting on springs to come in. The picture is my first 25 yard off hand test with my Rim Rock 180 hard cast wad cutters.