Bugdet Milestag- Continued

I've been continuing the development of my budget Milestag gun kit. This is designed to have a single sensor on the gun body to reduce the cost of the unit. Initially I've concentrated on the sensor electronics. I've created a kit to make a Milestag sensor:

Here it assembled. Surface mount components are a lot easier to solder than through hole:

This needs to be mounted in a sensor housing that can be fitted to the breech section of my Tagbits Guns, I've designed a special mount for this sensor type. I'll be building the gun in the next few days: