Designed to provide increased safety for shooters and gunsmiths working with AR-15 or M-16 rifles, Brownells has introduced the Safe-Port, which provides positive identification of an unloaded rifle. The Safe-Port installs easily on any AR-15 or M-16 rifle and ejects when the bolt is charged. It cannot be placed into a chamber while a round is loaded; however, it can be utilized while a loaded magazine is installed in the rifle. As soon as the bolt is charged, the Safe-Port ejects, indicating a live rifle.