MOE would probably work.
Pic from the last game day, must look for the others I've got of it. Mine is actually WE based , has trades, all the correct milling on the upper (front edge , extra slot and cut away over charging handle) and on the buffer tube (threads removed). Barrel shortened and lug removed. Buffer tube, stock, mag catch and fore grip are all R/S and I have a correct DIS for it. I also modded the lower KAC rail section so it appears to have the second securing system to match the one on the top section.