I've recently purchased an post ban m&p ar15 orc. I've already made the mistake of buying the wrong front sight post. I'm wondering now how to tell the difference between a compensator and a muzzle brake besides just the store's description?
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the way you can tell what it really is... is that a compensator directs gases thru horizontal or vertical ports and the exit diameter is closed off and is slightly larger (.010"-.020") then the bullet its ment for.
on the other hand the muzzle brake directs the gases vertically or horizontally and has a large open bare ended muzzle with ports on the top or on the flanks .
and anything with elongated narrow slits inline with the barrel axis all the way around the muzzle end would be a flash hider/suppressor.
what effective muzzle brake is open at the end?
I beleive the only thing a muzzle break does is cut down the flash that is seen and has not actual benefit to the shooter.