+1 for a X95, compact, and it weights pretty much the same as a CZ trail or BCL,
LAR pistol mags and semi auto build would be an added bonus. they also come with tritium night sights built into the rail assembly.
Most Semi autos can be split in two for storage like a takedown but will take longer to deploy to firing condition (AR180/ATRS/Ravens etc)
(Personally would not recommend a BCL, given their past issues with QC and customer care, lots of people feel the same way here, countless reviews about them too)
If you don't need a 223 specifically, a 10/22 with a folding stock, or a fixed stock 12-14" barrel would keep you NR, A Remington 870 with a 10" barrel will also stay NR allowing for 12G
22LR will allow you to use hi cap mags (tuff 22 mags) and 12G would allow you to run 00 or magnum slugs with similar performance if you're looking at predator defense.
Lots of options once you pin down what your required purpose is and what is the max size you want, Good luck with your search
