RE: homeprotection
depends on you layout of you house mine is open with large doorways and short hallways which i have only two
if i had both and there was one intruder i would go with a pistol with NATO approved hollow points no reloads factory only .
if there were more then one person i would go with a 12 gauge with turkey loades.
but why not both have a pistol on a shoulder holster that you can just throw on. and a 12 gauge
or a ar15 only worry there is it going through a few walls but if you buy some defense ammo that will not go far after entering the body
remember most swat teams use ars when they go into a house