M1 Garand Spring Op Rod Operating Rod - New ProductionM1 Garand Operating Rod Springs. Brand new production. Excellent quality US production and made to the original Springfield Armory drawing specs to duplicate the original spring with one exception being springs are manufactured from the highest quality 17-7 STAINLESS STEEL wire available in the industry. Superior over the standard carbon wire springs made during the war years. We now can offer what we believe is the finest main spring ever made for the M1 Rifle! Made in the USA on state of the art machinery and using the finest quality wire on the market.