4. Ordnance
  5. Automatic
  6. Gas piston type

William H. Grehl

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Combination plastic spring guide and buffer for automatic pistol

Ordnance – Automatic – Blow back breech block
Patent

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Firing-pin blocking device for firearms

Firearms – Safety mechanism – Trigger lock
Patent

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Gas actuated operating mechanism for autoloading firearm

Ordnance – Automatic – Gas piston type
Patent

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Magazine cap retaining means for tubular magazine firearms

Firearms – Stock or barrel connectors – Hinged or pivoted barrel
Patent

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Profile ID: LFUS-PAI-P-960628

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