One thing I noticed when I opened the parts bag. I don't like the selector switch. It's more of button style than the issue M16 -style. I plan on calling to see if I can swap it if they have standard levers. Other than that I'm still happy.
We liked the new style selector, it kind of differentiates ours from others, but everyone has their own preferences. It took me a few times to get used to it, but once I did I liked it better than the standard ones.
Kudos to J&T. I called them and they sent out an old style lever STAT. I received it in 2-3 days. I sent the original one they sent back in the same envelope. Excellent service. I think the few extra $ for their kit vs other kits was well worth the price. High quality all the way.