Uppers wants in on the TGC Challenge!
This video features a friendly competition between the "uppers" and "lowers" departments at CMMG, focusing on a 3-minute build challenge. Brocke constructs a direct-impingement (DI) 5.56mm upper receiver, while Kanen assembles a 9mm RDB (Rifled Drop-in Bolt) upper. The content is explicitly for entertainment purposes and not instructional. Viewers are encouraged to visit cmmginsider.com to become a CMMG Insider and access the company's website.









