Underground Tactical Barrels?

[Birdog]

I bought one of their ultralight barrels. 3 land polygonal rifling, 1:8 twist. This is my walkabout gun, made to jump shoot Porky. See build details under my post entitled "My First AR Build (But Not My Last)" - http://www.65grendel.com/forum/showthrea...ot-My-Last!).

Here is what I shot at 100 yds with a 4x scope.