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HRA GAS CYLINDER LOCK SCREWS | Dupage Trading Company
Amazon.com: GOTICAL M1 Garand Gas Cylinder Lock Screw Wrench Tool for Removing Gas Plug – High Strength Steel – Strong Grip Sturdy and Well Built for Conventional Gas Plugs : Sports & Outdoors
The Mosin Minute - Episode 54: Testing the Adjustable Gas Plug on the M-1 Garand at GPSR - YouTube