Devices for securing and retaining firearms that include either a lockable firearm cabinet or a firearm securement system. The cabinet includes a receptacle; a locking device and locking mechanism; a spring for biasing the locking mechanism in the locked position; and a bar for overriding the locking mechanism. The securement system includes a wall mounted plate for securing a firearm thereto; a release mechanism that allows the firearm to be removed and electronics for wirelessly communicating with a computer and the firearm to provide information regarding removal of the firearm or firearm cartridge from the wall mounted plate.