December 31st, 2016, 05:00 PM
Join Date: Sep 2013
I don't think so. The rear end of the upper is slanted where it mates to the lower. Others, like dpms pattern are curved. I don't think any others are made that way. Also look out for Rock River Arms as their uppers are longer than dpms.
Did you find an upper somewhere for sale? It would be cool if the polymer lower people made both types.