I have never heard of or seen a clamp on muzzle brake,that does not mean there are none. If there is such a brake installing it would not automatically mean you would loose accuracy. It could possibly not change anything, it could decrease accuracy, of it could enhance accuracy. It could act like a tuner .
AR muzzle breaks / flash suppressors are screwed on tight. Anything that is not mounted in the same way has a chance of vibrating and causing a problem with barrel harmonics. Usually the less contact of anything with a barrel the better.
Just curious Chesty Farmer, since the recoil of an AR is so minimal to start with why would you want to add a muzzle brake?
Not for an AR. I have a cousin who is going to Alaska with us. She is 5'3 120 pounds. I was going to set up a 30/06 for her. I did not want to go with managed recoil loads for caribou and moose. LOP might be an issue. And I might take off the recoil pad to help. So a muzzle break would be completely for recoil. For her size she is a beast. But I don't want to see her with a scar on that pretty face. My thought was if it clamps on I wouldn't have to go to the trouble and expense of threading a barrel that may never be used with the muzzle break again. And I don't want to sell it to her because it's my favorite gun. Shooting wise. Which is why I would not want damage to the barrel either.
Didn't vote for the husband. Not voting for the wife. #Liars