The RBR (Ruffu Breaching Ram) from Allen's Law Enforcement Safety Products is designed for breaching building closures. The RBR is operated by a single officer and can be used to open almost any door, including reverse opening steel doors, doors with multiple locks or it can take out a door's hinges. Its energy is generated from a 357 blank cartridge fired from an adapted eight-shot revolver (Taurus 608) -- this deploys the internal ram. The RBR can be deployed or fired eight times, just as fast as the trigger can be pulled and is easily reloaded with the supplied eight-shot speed-loader. The RBR has been designed with an internal silencer and a recoil control absorbing feature to help with any excess remaining energy.
