Advanced Armament Corporation Muzzle Brake, 5.56mm, 51t, 1/2-28

Works as it should, and looks good doing it. As said above it is loud without a suppressor attached, but it is a muzzle brake after all, and it's purpose is to have a suppressor attached. Fit and finish is nice, The coating on it is very strong

This adapter works great when attaching the suppressor to the firearm. That being said do not ever shoot your gun without the suppressor with this muzzle brake. We were testing with and without....ONE shot only with 5.56. No I didn’t have hearing protection for this one shot so that I could simulate hunting (1 shot). Everyone within 10 feet had temp hearing loss. It will deafen a shooter with one shot. Your weapon will be unusable unless you have ear protection at ALL times or the suppressor attached. It is like putting your ear against the end of the barrel. It works but be careful.

i have all three of my AR's fitted with this muzzle device, partly because i wanted the option of attaching a suppressor (m4-2000) to each one of them, but they also function great just as an expensive muzzle brake

Fast shipping from optics planet... fit and finish seem good. Comes with picture and different sized shims for proper installation. Haven’t gotten to the range yet but overall I am happy with this purchase so far.