the hunter barrels came with a factory installed muzzle brake, approx. 1 1/8" of muzzle brake on the end. For instance I have a 12" Hunter barrel, so it is 10 7/8" rifled barrel then 1 1/8" of muzzle braked added on the end - 12" total length. Hope this helps!?
I really like my barrel it helps tame the recoil and depending on the round, load, scope, grips, etc - there are time you can see the impact of the bullet! I REALLY LIKE THAT!!
Well, signing off for the night.
Del