The Cobra III Force features a return spring in the forearm. Simply pull back on the forearm and release, the spring will return the forearm forward thus closing the chamber. This makes for rapid firing in a pump shotgun. The spring can be removed and the gun will work like a traditional pump. Removable choke system that uses Beretta/Benelli Mobil threads. The Cobra III Force Features a pistol grip stock with soft rubber gripping, a picatinny rail with ghost ring sight mounted on the receiver and another picatinny rail mounted under the forearm.