When the Mk II started, it was time to make use of the modular abilities of the Nerf Recon. Nerfers take for granted the ability to attach and detach accessories since there's no electronic wiring connecting the two. For attachments to work for Laser Tag, you need to find a way to hook up these accessories to make use of new optics and that adds a WHOLE new level of complexity. Sundawg went through a few different variants of a modular removable barrel system for the RE-Con that eventually evolved into the system it now has. From manually plugging in wires before the hookup to testing with copper contacts on the barrel system, there were a lot of trial and error attempts to find a good usable system. There was also making use of Sundawg's electronics background that would move this blaster up from just being a simple recasing to an electronically enhanced blaster. While there wasn't a whole lot he could do about the functions of the board (sound effects, rate of fire, etc) there was one major part that he intended to upgrade: it's power. For a laser tag blaster, it's power lies in it's IR LED.
I've shown how power can make a difference in range before. When I did focus tests between Light Strike and the LTX, the brighter signal on the wall was the better performing blaster. The brighter you can get your IR LED to shine, the better range it'll get. This is because of how the laser tag sensors work. They receive hits when they sense a certain pattern of IR Light. If that light is too far away or too dim, the sensor won't pick up the signal. By making the IR LED shine brighter, you can extend the range of the blaster. That's when the "Booster Board" was developed. By drawing more power from a separate power source, he was able to increase the power going through the IR LED without increasing the 3 Volts going through the main board (so he didn't fry the board!). This is why the RE-Con actually has two separate power supply sources in it's clip system.
The RE-Con Mk II was a big performance increase from the original and really started to become a feared blaster in games. Sundawg had not only increased the power of the IR LED, but he had also focused a powerful lens in the Nerf Recon barrel extension to give it an even stronger signal. While simply increasing the output of the IR LED already increased his range, by fine-tuning the way that light was magnified, he was able to make even more use of that new power. This barrel would be used for general combat and, when removed, actually revealed a short-range unlensed IR LED that could be used as a "shotgun" effect, due to it's spread. The Mk II marked the first blaster in the Omaha Laser Challenge Associations history to have multiple firing modes depending on the equipment used.
The Mk III was really just fine tuning what was already becoming quite the beast to deal with at games. Not only was the wiring and circuitry of the base blaster refined to make it easier to use, but a NEW barrel was made as a Sniper-class attachment. Built from a lens purchased from 1SourceLaserTag, this new lens could achieve ranges that far-exceeded normal laser tag blasters. Generally, laser tag blasters have an effective range between 400 and 500 feet. The new lens could achieve ranges over 1,200 feet due to it's impressive magnification of the already boosted power of the IR LED. This meant that the RE-Con Mk III could pretty much hit anything the user could see. But since the focus of the Sniper-class lens was so tight, even being off by a few inches would mean a miss. Thankfully, because the lens was designed to be modular, the lens can be stored in a pouch and swapped out for the combat barrel from the Mk II.