I sold off my 9mm upper and don't need these any more. The mag block is an ASA drop in unit and it worked very well. The uzi mags I converted myself so some run perfect and some need a little more filing because they are too tight (sit a hair too high). I am selling 10 mags but including an 11th that has a bent feed lip, if you can straighten it out then you get a bonus mag. They mags are in great shape as is the mag block. I accept PayPal(+3.5%) and PO Money Orders only.