Shotgun. Definitely. Shotgun. 12 gauge.

Liked mine so much, I bought a couple more. Though the one with the 28-inch barrel is a bit too unwieldy for defensive purposes. I outfitted the Winchester 1300 with a pistol grip for easy handling, but I left the Remington 870 with the standard stock so I can still have a shoulder firing version (easier to point, and thus easier to make hits, I think).