Has anyone here ever seen a Model 721 with a compensator or a compensator that looks like the attached? I bought one in30-06 that has a small muzzle brake device mounted and I can't find any information on the make, manufacturer or type. It's apparently 2 pieces as the tip unscrews, however, I have been unable to unscrew the main unit from the barrel although I am just soaking in kroil and using hand pressure. There are no markings.
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