I've been mulling it over for a little while and I think I want to pick one up for my AR. A buddy of mine that I served with has the Surefire MB556K on his, but hasn't said much about it. There isn't much barrel rise or recoil to begin with, and that's the only thing that's really telling me not to waste the money on one. Can anyone say different? Is it worth it to get an aftermarket muzzle brake? And if so, were the changes noticeable right away? And what brand would you recommend? I know of Surefire for their flashlights more so than anything. Thank you everyone.