M25988 Extractor o-ring - Fluorosilicone M25988/1-006

FluorosiliconeExtractor O-ring High Temp Blue -  Per each

Can be used for enhanced extractor tension on AR15, M16, M4 and AR10 type rifles. These o-rings are mil-spec M25998 MIL-R-25988 high temp fluorosilicone material. Same application as Armalite EB0065, but higher temp-rating.