The pump gun is the shotgun that always works. Mossberg 500 and 590 series, Remington 870s and their competitors cycle any load you feed them - birdshot, buckshot or slugs - which is why they still dominate home defense and duty racks decades after their introduction.
We stock field, security and combo-barrel configurations in 12 and 20 gauge. See the home defense 12 gauge collection for the setups we recommend, or visit either NJ store to shoulder a few.