Not what i expected - Tiger Rock AR-10 .308 5/8"x24 Thread Muzzle Brake Fake Can Mock -Over Barrel Exp.Thread

The description and item pictures were vague, I knew it said faux and that it was over thread coverage but the barrel goes all the way till about .5 inches to the end. I thought at least be good as a blast forward device, should have went another route. The build and quality is good but it’s all for looks, a spacer or even some washers that fit would’ve helped but it didn’t come with any, the dia. of the opening fits just over the barrel so a regular crush washer doesn’t fit