Front sight spanner wrench for artillery luger?

Hey guys, anyone know where I can get any type of small pin wrench to adjust that microscopic spanner type screw on an artillery luger front sight? Doesn't need to be the actual wrench, but something that will work as one. Thanks

Do notAttachment 37537Attachment 37538 but one can be made, use an old screw driver and grind/file the point as needed. I have made several such tools for Mauser rifles that have that type screw. Also have used old set of car distributer open end wrench's.

Thanks Dave: Good idea, I will try grinding the center out of a screw driver