Tacfire muzzle brake - Tacfire .308 5/8inX24 Thread Full Size Muzzle Brake

while I am sure this thing works, I received the wrong part. the one I did receive, is poorly machined and scratched up. it was sent in a plain manila padded envelope, no receipt and no responses from two emails sent to Optics Planet about this part. it is not what I expect from them, looks like it was machined in a garage. This is very unusual in my experience from Optics planet, but I am hopeful to get it straighten out.