I am curious how many other people have tried the Lantac Dragon muzzle brake on their ACR's and what their impressions are? I bought mine shortly after purchasing the ACR and I have to say that it has reduced the recoil tremendously. I would reommend that anybody who has not had a chance to shoot a weapon with the brake to do so, as you will not be left dissapointed. I will warn you ahead of time it makes the 5.56 much louder, and if your looking for something to hide muzzle flash look else where, as it lets out quite the fireball in low light. The recoil reduction is hard to beat though, especially combined with an ACR which I feel has reduced recoil compared to the AR15 anyways. This is a photo with the device attached.