Its more simple then that! It just twists on the "ears" hold it on by locking on the the front sight! This was not a military part though ..its a "add on" kinda like putting chrome wheels on a car ..they are kinda useless .. i got mine when bought my SKS and i took it off right away! Here is a pic of a twist on muzzle break mounted (not mine.. found it on the web)
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