AR-15 Barrels are manufactured from two types of steel.
1. 4150 Gun Quality Steel, Heat Treated to RC 28-32 Hardness, and Stress Relieved.
2. 416 Stainless Steel, Heat Treated to RC 28-32 Hardness, and Stress Relieved.
Barrels are Drilled, Reamed, Rifled, Turned, and if Applicable, fluted on CNC Machines. All barrels are manufactured in the US. All our Finished Barrels go through a 100% Inspection Process. Inspections Equipment includes CMMs and Air Gauges for the Bores. Barrel manufacturer has Engineers with over 40 years machining experience. Our Barrels are manufactured under the ISO-9002 Quality Systems.