I only use 124gr NATO in my smgs.IMI,Winchester,GECO.Bought 30,000 rnds of IMI years ago.Starting to run low on that.Forgot to mention MEN9B works well also.
Never had John do any UZI work for me.Richard did my UZI work.Stan and John both worked their magic on my Sterling and their work was first rate.Would not hesitate to send ANY of my weapons to John for repair.hKg3k speaks the truth.
US barrel shrouds have NOS catches and springs.Numrich has NOS barrel nuts.I changed mine out and the nut never loosens.Well just left barrel shrouds web site,they HAD new catches.
I have no idea,but who checks for such things anyway?I suppose if atf had a hard on for you for some other supposed violation,they could use 922r as a add on charge?who knows,Good Luck!
Way over priced.For a GI that may or might not be reliable?Heck thats too much for a properly converted IMI for the time being as it were.I would look elsewhere.Good luck