Light Weight Build

I have a Recce style AR and want to build something a little lighter to lug around to training classes. I already have a RRA lower and CMT upper put together. Can anyone reccomend a barrel, forend, stock combination that will keep it light?

Thanks in advance

I haven’t finished puting it together yet, but the 16" superlight barrel from Bushmaster is well, super light! It’s carbine length though, and not a mid-length.

Vltor Stock, Daniel Defense rail, .625" barrel are all key to keeping the weight down. The compact ACOG is another weight saver.