Hi all
Fora couple of answers , the folding stock doesnt lock closed when folded at this time, working on that,
as for parts needed
UMP Lower I used the FBI Semi, Have to open up frt hooks to fit the usc upper
UMP folding stock
conversion block
7.87 inch barrel
USC upper vent slots milled out & modifyed to accept UMP Mags
3short rail & 1 long for the top
Ump Mags
After done I have put back to stock USC & there is no problems , this is a very easy conversion process, getting parts was the only hard part
As for price would have to dig out but all parts are on line
I think the UMP lower is a much better fit to my hand then the stock USC stock
As for a range report will have to wait for the UMP Mags that I have on order to come in, have used the USC mags in the UMP lower but to much side to side play to shoot