Welcome to the forum Dogboy13! Check out the 12 Group Buy Green Mountain barrels with new enhanced rifling and 1:7.5 twist. I got a 12 barrel out the last batch and I really like it. There is additional information on these barrels in the Group Buy section here on the forum. Here is a link to SixFiveArms.
http://www.sixfivearms.com/shop/
Here is a link to the discussion in the six five arms section in the Industry Partners section.
http://www.65grendel.com/forum/showthrea...el-Barrels
There are pictures and detailed information in the closed 12 barrel thread in the Group buy section.
http://www.65grendel.com/forum/showthrea...-50-145-50
http://www.sixfivearms.com/shop/
Here is a link to the discussion in the six five arms section in the Industry Partners section.
http://www.65grendel.com/forum/showthrea...el-Barrels
There are pictures and detailed information in the closed 12 barrel thread in the Group buy section.
http://www.65grendel.com/forum/showthrea...-50-145-50