Mine has one of these barrels on it ;
Black Hole Weaponry It's a 16" pencil barrel, 1:8 twist, mid-length gas system, 12" Daniels Defense lightweight handguard with a Magpul grip and MOE Carbine buttstock.
Ed:
That looks like the direction I'm going in. The description on the website looks interesting, but it doesn't have the weight of the barrel.
Do you recall what your rifle weighs, empty and without scope and mounts?
