At the time of writing this, it's currently on sale for one buck. Given the price, why wouldn't you want that all-steel construction euro surplus niblet that fits all 14x1LH threads, adjustably tighter than a stock muzzle slant, and can be spraypainted to be the same color as the rifle?
As far as aesthetics go, it's non-invasive and can easily be mistook for a regular old muzzle brake. Durability? This bit will outlive your grandkids.
Don't feel bad about grabbing a couple for your AKs - stock up on barnaul blanks and have one hell of a 4th of July with 'em.