06-24-2018, 07:14 PM
So I couldnt resist a $60 BCA barrel from primary arms on Memorial Day so Im putting a Grendel upper together. I know you get what you pay for but I figured it would be worth a shot. Anyways I dont need this to shoot sub moa, just looking for a hog gun with more stopping power than 556. Ive built 4-5 ARs in the past and I know all about putting them together but I dont know a thing about checking if theyre in spec or not. What do I need to check on this barrel to make sure its not a total pos? Itll be a couple more weeks before I can shoot it.

