Parts finally came back from paint today. So I got the M4 put together and took it out to sight it in on my private range here in the forest. This one is a smooth shooter. I can't tell the difference between buckshot and slugs thru it. I went through nearly a 100 rounds of slugs and buckshot to get everything sighted in and to see how the action was performing. Cleaning it when I got home was quick and easy. Everything wipes off with a rag with very little effort.
Target set at 40 yards.
Three shot groups of some cheap slugs.
3 shot groups continued. Dialing in the optic.