The design of the GForce One operating system produces unmatched functionality and reliability. The Gforce One comes with two plugs and its made to handle 3" magnum shells, as well as light 1oz field loads. With our inertia operating system the GForce One features an oversized charging handle, safety and bolt release button; stainless steel recoil spring; Benelli Crio choke thread pattern and includes five extended chokes. The GForce One has a 3+1 capacity. It also comes with a 10+1 magazine tube extension kit just so you're ready for the spring snow goose seasons. Includes magazine tube extension and 5 factory chokes- cylinder, improved cylinder, modified, improved modified and full.