anyone use or see one of these?

[na1lb0hm]

http://www.blackrivertactical.com/product.html

basically a closed up a2 style flash hider to project the blasty-ness downrange.

are they available in Canada - if not what are some options for less uh, concussive devices that throw sound downrange?
I know about the pws triad. I'm looking for 6.8 with 5/8"-24 tpi
how bad are the BABC?

 

[Ar180shooter]

I've seen similar things before. They really work well on .22's.

 

[mebiuspower]

"It provides flash suppression nearly as good as the A2 style dedicated flash hider."

A2 flash suppression is pretty poor...

 

[CarbineOne]

Get the Levang Linear Compensator instead.