I didn't know all that about troy, holy crap. I knew there was something they did to **** people off but wasn't sure... I'm not a huge Colt fan boy, just because I don't want to pay for it, but that's a good price on a 6920! I also like the sigs as the first guy said. My buddy has one and I really like it. Fit and finish is great, and everything not "milspec" is pretty well thought out, and likely something you'd put on later anyway (QD mount). I'd build personally, but I think any option given would be a good one! BCM is on the top of my list as well.