White Sound Defense muzzle device
http://www.whitesounddefense.com/pro...51901_zoom.jpg
http://www.whitesounddefense.com/pro...%252d556-.html
Here's an interesting new take on the pronged flash hider... at first glance it looks like an AAC Blackout, but if you look carefully the bottom prong is wider than the top two. The side vents are pointed more at 3:30-4:00 and 8:00-8:30, instead of equally spaced 120 deg apart as on the AAC.
This redistribution of vents probably contributes to the compensating effect and reduced dust printing that WSD claims. As a three-prong device I expect flash suppression to be excellent, with no added concussion. The holes or internal construction of the tines probably keeps them from ringing. The only thing I have a hard time seeing is how it reduces felt recoil.