Yeah, you're right, I'm not going to just accept this. The railed handguard is canted to the left, and the front site is off even further than the handguard. The more I look at it, the more it pisses me off. I've sent another email to Dlask about this. Unfortunately, I'm on Vancouver Island, so the best I can do is ship it back to them, have them mess with it, then inspect it when they send it back. I wish I could just go to their shop, inspect it there and have them keep it until they get it right. At this point, I'm not sure I'd be fully satisfied with less than a replacement of the upper with one that is put together properly from the start. I'm just not comfortable with what they might do to try and "fix" this one. They even managed to put a chip / scratch in the handguard and one of its rails while switching the FSBs. The finish on the upper receiver leaves a bit to be desired as well, with a couple of spots that are lighter than the rest ... apparently inconsistent anodizing. The lower looks and works great, but the upper ...
Anyway, I know there's a representative of Dlask on this forum. If you're reading this, you should know I'm starting to wish I paid attention to the negative half of reviews I read of your products, rather than the positive half. I would like to end my participation in this thread totally satisfied, with good things to say about your customer service ...