DC Machine is the biggest machining company you may never have heard of. However, you are likely familiar with Palmetto State Armory, located in Columbia, South Carolina. PSA is one of the fastest-growing gun companies in the history of ever. While the operate a handful of retail stores, they sell lots and lots of guns and shooting gear across the country online and through other retail outlets. As it so happens, Palmetto State Armory and DC Machine are sister companies. I recently had the opportunity to tour the DC Machine operation and get a first-hand look at how quality barrels are made.

Read the rest: An Inside Look at How AR-15 Barrels Are Made: DC Machine