Shim Question

So i picked up a set of SHS shims from airsoft atlanta the other day and i have a question about them. in the set there is 3 different kind of shims. all seem to be .01's but there are wide steel shims, narrow steel shims and wide copper shims.whats the difference?
thanks in advance

sorry they arent just wide steel shims the are wide and octagons

mxjoe388 wrote:So i picked up a set of SHS shims from airsoft atlanta the other day and i have a question about them. in the set there is 3 different kind of shims. all seem to be .01's but there are wide steel shims, narrow steel shims and wide copper shims.whats the difference?
thanks in advance

They are different thicknesses, if you dont know that then you are probably better off letting someone who knows what they are doing shim the gun for you or it could result in your whole mechbox internally self destructing.

yea sorry i realized that when i opened the package this morning. no my first time shimming just used to a different brand