Here's a guide on how to build the GunCon3 emitters in case you dont have those anymore.
Have a GunCon 3 With No Emitters? Well You Can Build Your Own. Here’s How
Re: Have a GunCon 3 With No Emitters? Well You Can Build Your Own. Here’s How
Anybody selling good quality sensors besides porkchop (misteraddons)? He's out of stock right now