The LALIZAS 71741 Auto Re-Arm Mechanism Hammar MA1 is an essential safety device for any sailor or seafaring individual. This mechanism is designed to automatically re-arm inflatable life jackets equipped with Hammar MA1 firing systems. It includes a 33gr cylinder for ease of installation and quick re-arming. This product is compatible with a wide range of inflatable life jackets and is an essential piece of safety equipment for anyone spending time on the water. Keep your inflatable life jacket in top working condition with the reliable and easy-to-use LALIZAS 71741 Auto Re-Arm Mechanism Hammar MA1.