NAVSEA style battery cap compatible with the L3 ATPIAL family of laser devices, originally intended for NAVSEA marked LA5 devices such as the LA5D and LA5E. This is a redesigned reproduction cap utilizing a strong internal spring and large O ring for added recoil resistance/ dampening. The texture around the circumference of the cap has been made more aggressive to aid in installation and removal of the cap. Type 3 hardcoat in matte FDE and black.