Liberty 24" M1 Garand Replacement Barrel Replace that worn out barrel on your old M1 Garand and get back to shooting great groups! 30-06 Springfield, 0.010" Short Chambered 4 Groove, 1:10 Twist Button Rifled Barrel USGI Profile - John C. Garand Match Legal Mil-Spec to Print 6535448 Material: 4150 CMV, Black mag phosphate coating The barrels need to be taken to a gunsmith and have the chamber finished, barrel timed, and the gas ports drilled. This also allows the shooter to have the hole drilled based on their load.