Great design, finish needs polish & qc - JARD AR Side Charge No Bolt Upper Receiver Assembly

So, this receiver and bolt carrier were exactly what I expected in terms of form and function. The unit disassembles easily -- the charging handle slides out of the bolt easily when the gun is opened and the bcg is fully pulled back.

However, the finish left something to be desired. The anodizing job on the receiver was B/B+ quality job. It is sturdy enough in most places, but just working the bolt (and feeling resistance) rubbed some of the anodizing off the interior of the receiver. I removed several small burrs from edges along the ejection port and bottom of the receiver. Several of the edges required filing down. The slot in the bolt carrier for the receiver extension retainer to slide through is cut shallow, and it has been catching/rubbing on the receiver extension retainer. I'm sure most of these issues with smooth out (pun intended) over the first few hundred rounds even if you don't file them down like I did. But, at this price, I think the finish and tolerances should be slightly better.