Well I bought one last fall and have put enough down range that I can now comment on these on a personal note. I bought mine in a .40 s&w.
I have now shot it in -25 in heavy snow, in heavy rain, and in beautiful conditions, and not one jam with mine to date.
I phoned the makers of these and asked about lead bullets and if i could use them, there smith said yes, it wont hurt the gun but could cause some feeding issues, so i tried it. I tried it lots to be honest and no issues to date.
I topped mine off with a STI relfex site that seems to work well
At 25 yards with copper wash or lead it will cut a ragged hole, at 50 yards it will shoot 2-3 inch groups. I never tried 100 because well that is not what this gun is all about.
I am quite happy with it,
Some will ask if you want an Ar why not buy an Ar and my answer is I have 4 thanks and I have.... The JR is a fun gun, low recoil and a pleasure to shoot, and most important non restricted..
However carry your paperwork, some would say regardless.
So buy it or dont buy it, no one can judge the want of another.
If you are looking for a plinker that is a pleasure to shoot off hand and very cost effective ammo wise, than go for it.
If you are a looking for a semi auto that you want to shoot out past 50 yards or play with some percision shooting out to 100-200 yards than this wont work, and a STI or Colt HBAR is more suited to your needs
Jay
If you are looking