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Eliminate the ringing, modifing an open tine flash hider
I got tired of my AAC 51t flash hider ringing like a tuning fork (as an engineer it also bothers me that it is lazy design work). So I took 10 minutes to "fix" it.
I drilled a blind hole down the middle of each tine of varying depths (enlarge 2nd picture for depths, they are not critical as long as they are sufficiently different). This makes each tine have a different stiffness and mass so they don't have the same natural frequency, and thus do not resonate. I used a carbide center drill to get them started close to center and chamfer the edge.
Attachment 36954Attachment 36955
Really, only 2 of the tines needed to be drilled, but I did all 3 so it looks better as my suppressor is usually on my sbr. Drilling a varying number blind oles in or grinding down some of the outside of the tines would have worked too, but likely look like a Bubba work.
I can still get it to ring a little if I try, but it isn't as loud and dies much quicker. However, the bolt closing no longer makes it ring, so functionally it should be gtg.