As this correspondent considered the Keltec KS7 as a potential hunting shotgun, it became evident that a magazine plug would be required to legally hunt migratory game birds, such as ducks, geese, and mourning doves.KelTec KS7 12 Gauge Pump ShotgunShotguns, which are used to hunt migratory birds, are limited to three shots, including shells in the magazine. As the Keltec KS7 will hold seven 2.75-inch shells in the magazine, a magazine plug is necessary for legally hunting those birds.Three loaded 2.75-inch shells require about 7 inches of magazine space. Two 3-inch loaded shells require about 5.6 inches of magazine space....