Original U.S. M61A1 20mm Vulcan Rotary Cannon Barrel Muzzle Clamp as used on F4 Phantom Martini-Henry Bayonets It is in total compliance

It is in total compliance per the current BATF regulation governing ordnance

It has the standard black enamel finish

we know that the Series I revolvers have serial numbers from 1 to around 4200

for the Prussian (and later Imperial) arsenal in the Baltic Sea port city of Danzig

as the lack of a separator in the pouches meant that M1 Garand En-Bloc clips would fit without issue

Original U.S. M61A1 20mm Vulcan Rotary Cannon Barrel Muzzle Clamp as used on F4 Phantom Martini-Henry Bayonets It is in total complianceOriginal Item: Only One Available. The M61 Vulcan is a hydraulically, electrically or pneumatically driven, six barrel, air cooled, electrically fired Gatling style rotary cannon which fires 20 mm rounds at an extremely high rate (typically 6,000 rounds per minute). The M61 and its derivatives have been the principal cannon armament of United States military fixed wing aircraft for fifty years. This includes the fighters that they supply to Allies