The Midland GMP4118 is a .410 single-shot shotgun that folds in half for storage. Extended it's 35 inches; folded it's 21.5 inches, short enough to fit in a standard backpack. The barrel is 18.5 inches and the whole gun weighs 4.85 lbs. The chamber handles 3-inch shells. A positive trigger-block safety, a cocking indicator, and an ambidextrous cheek piece cover the basic safety and ergonomics. The weatherproof synthetic stock has checkering at the wrist and forend, and the removable buttpad opens a storage compartment. Barrels are interchangeable for switching gauges.