Switching a 300 blackout to 6.5 grendel

[VASCAR2]

I’d get the group buy 16” mid length gas manufactured by Green Mountain for SixFiveArms. I have a group buy Faxon 16” mid length gas barrel and the GM barrel is basically the same profile. The new GM barrels have the faster 1:7.5 twist and the rifling has been tweaked to produce better accuracy with Wolf steel cased bimetal bullets. The price is $139 and Monster bolts should be in stock soon.

http://www.sixfivearms.com/product/monster-16/