Saw this post about QB78 muzzle brakes

http://www.network54.com/Forum/message?forumid=113813&messageid=1091062200
And I've decided that making a 1mm brass shim shouldn't be too hard.
Found the RWS 16mm brake at D&R for $24.24
If they don't back-order it, I'll post the results here in a couple weeks.
Cheers,
Rich