DC Machine LLC who are we? We are the one stop shop for all of your AR15 and AK47 wholesale needs. We've extensively expanded our wholesale line with new offerings in 2016. We are also the Pilot Sponsor for the 2016 TV Show "The Big Gun...Ladies First". ISO 9001 Certified manufacturing center. Very well known for gun barrels and barrel accessories. Over 3.5 million gun barrels in the field with a wide variety of contours, chambers, lengths and materials. Specialize in AR and AK barrels and custom orders. Manufacture our own barrel extensions as well as barrels 100% in house. (less)