Semi-Tubular Rivet Liner US M-1

Semi-tubular blackened brass rivet for M1 liner . Necessary for changing and repairing the Riddell-type suspension system of US WW2, Korean War and early Vietnam under-helmets. The rivet must be coupled with the "A" washer in order to maintain the straps in the liner. Sold individually for a one-off repair or in batches of 10 for a complete change of the internal line of the M1 liner.