Thanks, Josh.
I have nearly hit my limit when it comes to the work I've done on this thing.
I've still got a couple of little things left to do, and I'm having a hard time finding the motivation.
I've decided that it is getting one of the MP10s off my 40B. I'm honestly not fond of the things . . . they just weren't the right choice for that system. I'm hoping it will work nicely on here.
The more I play around with that link the more I like it. The recommendations it gives appear to be really solid.