Q: Is there any chance you would do a 20 inch barrel upper in 308. I just feel if you’re stepping up to that size caliber that you’re looking to go longer range with more power and I feel the 20 inch barrel would be able to reach out a little longer and increase the velocity of the projectile!
A: We can do a 20" .308 piston upper. If you have a barrel in mind and you want to drop ship it to us or if it's a barrel that one of our vendors carries we would be happy to build off it. Our gas block barrel journal requirements are .750" diameter and at least 1.98" long. We recommend Criterion barrel for this caliber, we have tested them and they are top-notch.