A non-metallic sleeve device adapted for use with a firearm bolt. The non-metallic sleeve is generally durable, heat resistant, and generally nonmalleable. The bolt may be used on a bolt action, semiautomatic, or automatic firearm. There are two steel ends of the bolt each with an inner portion and an outer portion, said inner portion having a reduced diameter and screw threading thereon. A non-metallic tube, comprising a material such as carbon fiber, may be epoxied in position onto the screw threading. The result is reduced weight of the firearm bolt.