I didn't see this mentioned anywhere else on the board via the search button, but in this scenario would it be a good idea to acquire one of these?:
Colt LE901
I have not handled one, but the versatility of having both a carbine .308 and 5.56 AR platform with only one receiver seems like a good idea. The Bushmaster ACR appeared to me to be too maintenance intensive to quickly change calibers, whereas this seems to be an easier transition. If it can take a run of the mill 5.56 upper I imagine it could take a .22 conversion as well? Does anyone have any experience with this rifle that they would like to share in respect to it being/not being an option for this emergency bug-out?
Here is a youtube video:
LE901 video