If you are in the middle of a bug out, you’d want a ready-to-use weapon anyway, rather than an assemble-in-the-face-of-a-threat weapon. Get a nice AR-15 style 22LR, cheap but deadly.
Oh, I have one of those, and a full sized AR. I am more talking about either being stuck four miles from home, or just to have in the truck, in case.
If it is a bug out situation, I have that covered (probably more than I could ever use—someone picking over my stupid corpse would be happy!)