Inventory is in short supply. We are taking orders and will manage a backorder list. Most items ship within 4 weeks. You've picked from great uppers and lower for your .308 custom build. Now is the time to outfit that bad boy with a barrel! Select your preferred barrel material, length, and barrel profile. All barrels feature button rifling with a twist rate of 1:10 inch, .750 diameter gas block journal, 5/8x24 muzzle t