a friend of mine bought a Para Ordnance and was upset when he found out that the Ciener kit won't work because it has a ramped barrel. I told him the good news is, Ciener makes one for the Para. The bad news is, you have to order it from Ciener directly. Oh well. Forget it and buy a Ruger 45/22.
I have a ciener and three 15 rd mags I bought from Midway, and I have found that all conversion kits need some break in. For a long time, I could only run Stingers or Velocitors through it, now it has loosened up a little and works just fine with Mini-mags. I am considering getting a dedicated frame with a lighter mainspring to see if it will cycle regular ammo more easily.