The best barrel to go with an ultralight ar10 build - Faxon Firearms .308 Winchester Pencil Rifle Barrel

Bought this barrel because I wanted the lightest AR10 possible that didnt sacrifice any accuracy or functionality. Because of that, I ended up getting the 20" pencil barrel for my build since I always believed 20" is the sweet spot for 308. The barrel had no issues fitting into the receiver once I lubed it a tiny bit and it headspaced perfectly, not that I needed to headspace it. I have yet to shoot with it but if the fit and finish is any indication, I have no doubts I made the right choice in my barrel selection