SureFire A12 Replacement Battery Adapter for WeaponLights, for Attaching L36, L37, L39, L60, to A21 Housing

The SureFire A12 Battery Adapter is an integral part of the Classic WeaponLight system. It facilitates the attachment of the L36, L37, L39, L60, of laser modules to the A21 housing.
Classic WeaponLights come with one of these adapters, it is being sold here as a replacement part.