well, while i like the little guy, it did and does have some issues, we finally narrowed it down,
issue is as following; after installing holosun green dot, which by the way can be easily fubared if one does not pay attention to torque the composite rail seems to flex considerabaly.
anyway, we attempted to zero in, and well was a trying experience, (just for the naysayers, boys with me are pretty good, well i'd say excellent at doing this as well as i do alright meself, don't want them to get a big head, it might cost me next time, lol)
but it was all over the place, so the we went thru the process of elimination. and eventually came up on what could be one of two issues.
we found the flash hiders was peeling lead off the coated bullets, so on removal of the flash hider we had much better success of getting it to print properly on paper. so the issue is the barrel is threaded wrong, or the flash hider is not concentric to barrel, with that said, we probably could have eliminated this IF we had had another flash hider to try, so now have to wait for the next trip to see ;;what, who, ect. but have to say its a hoot to shoot, no regrets, we had planned on giving it a go with a suppressor, but chose not to endanger the life long waited list item
Rj