Benelli Montefeltro Ultra Light Shotgun: 12 Gauge-3", 26" Barrel, Model Boasting a shortened mag tube and a carbon-fiber rib with 26-in. (12-ga.) and 24-in. (20-ga.) barrels, the Montefeltro Ultra Light features the Benelli Inertia Driven System, providing effortless cycling of even light loads to further reduce weight so you can stay in the game for "just one more." Inertia Driven System The Inertia Driven System is a reliable and easy-to-use system that can handle a wide range of loads - from light field loads to heavy 3-1/2-inch magnums. It's simple to operate and only has three main parts, which makes it easy to clean and maintain. The system is very strong and is made with durable steel locking lugs on a rotating bolt head. It's fast and lightweight, and perfectly balanced which makes it easy to carry and use. Standard Features Flush Crio(R) Chokes Flush Crio(R) Chokes C, IC, M, and choke wrench. Shim Kit The stock drop and cast is user-adjustable. Changing shims using this included kit provides a customized sighting plane to fit your unique physical build and shooting style.