I would but I don't like the hand guard on the 243 upper and I'd prefer an Aero upper to match perfectly with the aero lower. I'm keeping the complete 243 upper for the 86 rounds of 243 I have left. In case I ever need it for some end of the world reason.
LoL, good luck with finding that Aero upper! Those things are scarce as hen’s teeth right now.
Eric