I was comparing a mega lower to a kac lower and noticed the magwell thickness is .022 less on the mega. The kac was around .088 and the mega was .066. It is very noticeable with the naked eye. Anyone else noticed this? Are RRA or eagle lowers thinner like this? My preban oly lower is also around .088,but it varys any where you put it on the magwell(machine work was pretty crapy on this one). It's going back for a reman. Who ever had it before me used a dremel/file on almost every hole on it. Just curious and any comments are appreciated. Thanks