A switch on the bottom lets you change from one tube to the other. You can load one side with slugs, the other with buckshot if you want, or just keep 15 rounds of buckshot onboard. That is a lot of firepower in one short shotgun. The barrel is 18 ½ inches, making it legal for sale to anyone, and the shotgun has an overal length of just 26.1 inches. The price will be around $800.