MIL-P-19419A, MILITARY SPECIFICATION, PLATING, CHROMIUM, ELECTRO-DEPOSITED, (ON THE INTERIOR SURFACES OF 20 MM MARK 11 GUN BARRELS) (1 NOV 1960)

MIL-P-19419A, MILITARY SPECIFICATION, PLATING, CHROMIUM, ELECTRO-DEPOSITED, (ON THE INTERIOR SURFACES OF 20 MM MARK 11 GUN BARRELS) (1 NOV 1960)., This specification presents detailed requirements for high contraction electro-deposited chromium plating on the bores, grooves, and chambers of 20mm Mark 11 Gun Barrels.