Nah, I know what you mean, and it may be meant to look like the pic you posted, as I know some flash hiders are like that, but if you look at this pic, you can see it is very obviously not a smooth finish if there is meant to be a compensating cut out part, so if that is supposedly what the finished part looks like, then it is as rough as a bear's arse and quite clearly not up to par. Check out these pics of it, that is very obviously a chipped edge, not smooth at all. Of course I could file it smooth, and if they tell me they're all like that then i will do so, but frankly, it's very ropey casting and QC if they really are all like that: