I built two covers so far. One is slick with nothing on it. One is as shown in the pictures. I didnt use anyone elses design as a copy. BUT, there doesnt seem to be too many ways to build a suppressor cover. I guess thats why Tab, Armageddon, Griffon, etc all have the same basic design.
I have a real nice no contact laser infared thermometer and did a bunch of testing. Like MOST of the other companies, these would not be rated for full auto. I think that two back to back mag dumps would be close. (30rd .223)
As far as for my long distance shooting they have worked great.