SHTF which one do you choose?

[ram 50 v8]

If its AR, then 18". Still would prefer my 16" 7.62x39 Vepr or Vepr Super in 308 (depends if environment is open field or in town/forest)

In scenario other than in car or pull from closet, longer barrel always better for me (fact that I am 6.4" does sway my opinion)

 

[lostgeorge75]

12 inch 300 blk works for me. I've took probably 2 dozen deer with 110 grain VOR-TX. Good out to 200 yards. Quick engaging multiple targets and compresses up tight when pieing corners and clearing rooms.