Top Cover Tightening
Instructions for removing the "slop" between your UZI Top Cover and Receiver.
Some squeeze the rear of the cover in a vise to make it fit snug but I don't like this method because of the top cover scratching the receiver......
Mix JB Weld or equivalent and place a small amount on each side of both ends of the bottom and sides of the top cover.
Cover both ends of your receiver with Saran Wrap. JB Weld doesn't stick to the wrap and the thickness is .0005". Nice slip fit tolerance as a result.
Place your top cover on the receiver and let sit over night.
Remove the top cover and wrap.