Crracer has built this one. It weighs 6.6lbs with a 20 round magazine. it is a New Frontier Lower and a DPMS upper. He says that the plastic trigger breaks very clean no grit. 6.6 lbs with a full 20 round mag just as she sits..
100MEDIA95IMAG0947(1).jpg
I think his build came in under 5 if I remember right $99 for the lower $383 for the upper both included shipping but the $20 for the ffl was split between this and a pair of Mosin Nagants....real sweet job cant wait till I get to shoot it!!!! 8^)