WTB 9mm AR15 upper and block- Colt type systems only
I'm looking for a 9mm AR15 complete (w BC/CH) A3 upper, with mag block
NoBan features preferred
A1/A2 upperes nee not apply unles they are dirt cheap. I would rather not have to buy a separate A3 receiver. Then swap them out. Then have to try and sell the A1/A2 receiver.