Works great, a little flamey - Griffin Armament M4SD Muzzle Brake

I bought this to use with my QD Blast Shield (first gen) on my 11.5" pistol and liked it so much I bought a second for my 14.5. It works great for recoil management but it was spitting some big fireballs out of the pistol. I have not shot the rifle with it yet but I don't expect it to be much different. Fit and finish is excellent, the only downfall is the price.