PSA/H&R Clones the Department of Energy Colt 9mm SMG
This review examines the PSA/H&R reproduction of the Colt Model 633, a 9mm SMG originally developed for Department of Energy security. Key features include a shortened ejection port, a solid brass deflector, a folding front sight, and a screwed-in feed ramp essential for reliable 9mm feeding. The video demonstrates the firearm's functionality and historical context.









