Ran a carbine 2A built for me (and the SDN-6 they sold me) at a course this weekend. When everyone else's carbines were crapping out from the mud, rain, and BCG grime, it ran like a champ. Thanks for the quality build guys!
I found myself with two Ar-15 uppers and only one lower, so I did the
logical thing. I went to 2A today and they are building me a lower. Why order one and pay them a transfer fee, when you can mix and match the parts right there and see exactly what you're getting?
The KMR rails are excellent. Really strong mounting system, super lightweight, and the versatility of the keymod system. It's a hard to beat combination.