Disclosed is a device for facilitating disassembly of a firearm and release of a magazine removably attached to the firearm. The device comprising a fulcrum configured to be attached to the firearm, wherein the firearm comprises an upper receiver, a lower receiver, a rear takedown pin and a magazine release mechanism, wherein the rear takedown pin is configured to secure the upper receiver to the lower receiver, wherein the magazine release mechanism is configured to release the magazine from the firearm based on actuation of the magazine release mechanism. Further, the device includes a lever arm configured to operationally engage with the fulcrum, wherein a first part of the lever arm is operationally engaged with the rear takedown pin, wherein a second part of the lever arm is operationally engaged with the magazine release mechanism, wherein actuation of the lever arm displaces the rear takedown pin and actuates the magazine release mechanism, wherein displacement of the rear takedown pin results in disassembly of the upper receiver from the lower receiver, wherein disassembly of the upper receiver from the lower receiver occurs prior to actuation of the magazine release mechanism.