US Patent 10495399 Non-detachable, reloadable box magazine system

An improved rifle includes a magazine body attached to the rifle, and a base plate releasably and slidingly engaging the magazine body and forming a base of the magazine body. A release is provided to unlock the base plate when actuated by a user of the rifle. The base plate is configured to move away from the magazine body when unlocked, thereby exposing an inner chamber of the magazine body for insertion of an ammunition stripper clip thereinto.