This video provides an expert overview of the PSA/H&R clone of the Colt Model 633 DOE 9mm SMG, presented by Ian McCollum. It details the firearm's historical context for nuclear site security and highlights specific technical features like the shortened ejection port, brass deflector, folding front sight, and the unique screwed-in feed ramp. The segment includes a live-fire demonstration, showcasing the firearm's operation.
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