In december i had the same dilemma, if i recall Questar had priced me one from RRA, but there was a long waiting time involved.
I ended making a WTB thread and got what i wanted, Armalite NM A4, slightly used, mfg date 2012
If ever sponsors we're to carry some i would probably get a secong, it's my personnal favorite firearm i have put my hands on. Feels weird at first as is very front heavy