I picked up an industrial laser module to use to calibrate the IR emitter for distance with the battle unit. I set it in a brass tube that the Tamiya emitter housing could snap onto, locking it in aim with the laser. At dusk I could clearly see the spot on my backyard fence from my shop window, at least 100' away so it should work well.

I was looking around for a base to attach it to and saw an old B9 model on the shelf, so...Danger Danger.

Beam aimed at where the apple would be on Wittmann's Tiger.