22 cal polymag short
These ended up surprising me. They fit my Origin magazine. The Origin didn't like them though, not even a little. The standards feed with single shot tray were one hole at 10M. Shocked me when these were not grouping. I have 2 other 22 cal that I can try them in. Maybe just the day. These were shot at 30 yds from Origin. It will shoot 18.1 stuff great.