Curious if we might see more uppers than what Lage is producing. I always thought the MAC lower and an Upper that resembles a BREN MKII would look decent - To me - the MAC frame and pistol grip outline fits under the BREN somewhat. Clearly a BREN upper won't fit or likely even be modded to fit, but a lage-type upper where it resembles a BREN. Have it take 308 AR mags?