[IndispensableDestiny]

If the Ruger 10/22 was "designed to mimic the size and weight of the historic M1 Carbine," then get an M1 Carbine.

Rather than the PTR-91, get an M1A. More options.

I think an AR-15 with a pinned flash 14.5 inch barrel is best. YMMV.

[Texas resident]

The 10/22 is a nice plinker, but for home defense I don’t think it would be effective. A friend of mine who is a deputy sheriff told me that the best home defense needs to have a 4 in front.