Echo 1 ASC Scar H-allen key size?
 

http://echo1usa.com/English/index.ph...nbmrm4g835b9d5

I am working on the above gun and am stuck at splitting the gear box. The fire selector arm that goes through the gear box to make it ambidextrous has two tiny little allen key nubs on each side that attach the arm to the geared piece. My allen keys are to big for the tiny little hole. I am wondering what size I need to buy that would fit in there.

.035inch hex

Had to go to a computer repair place to get a hex key that small.