Rejetting parts question

[Eightmarky]

What is the size of the #4 washer?  I went to home depot and could not find #4 washers but there were plenty of washers with just the measurement size on the package.  I asked the sales guy and he was no help.  Thanks. :dunno:

[GRU]

it doesn't have to be #4....some people used #2 and i used a #6 because i couldn't find #4

as long as the washer is .5 mm thick and it fits inside the hole of the slide, it will work