Noobie question: Laser Drop in pill for UniqueFire style flashlight

Hi all and thanks for having me in your forum. I have a few rebadged “UniqueFire” flashlights / torches, two of which came with an 850nm laser pill in it, instead of the usual LED pill. The throw has to be seen to be believed. It really is incredible. However one has become faulty. I would really like to obtain or build half a dozen of these 850nm Infra Red pills. Does anyone know where I can purchase such, or perhaps where I can go to purchase the components necessary to start my own build? Any advice from anyone who has done such would also be immensely appreciated.