I know it wasn't directed at me, but the PA MicroDots are really great red dots. They can handle a lot of shock and impacts and can be used on real AR's. They're water proof as well and I've played in the rain on multiple occasions without any issues. The dot is clean and can be seen in super bright conditions, etc, etc. Really good sight for the price though to my understanding some what hard to get outside of the US.
On a different note, damn I'm really falling in love with the Vision King short dot.