DoubleStar AR789 Bolt Carrier Rebuild Kit for AR-15 Bolts and Gas System

The DBST BOLT CARRIER REBUILD KIT from DoubleStar is designed to refresh and restore the reliability of your rifle's bolt carrier group with a matte black finish and durable components. This kit includes an extractor, an extractor spring with a bumer pad, a set of three gas rings, an O ring, an extractor pin, a firing pin, a firing pin retaining pin, a gas key, and two gas key screws, providing all the essential parts needed to overhaul wear-prone areas and restore smooth operation under demanding field or range use. Built for AR-style platforms, the kit's black matte components ensure a low-reflection, corrosion-resistant surface that stands up to frequent disassembly and reassembly. Whether you're outfitting a dedicated rifle or conducting routine maintenance on a semi-auto precision setup, the DoubleStar rebuild kit supports reliable chambering, improved extraction, and consistent gas seal performance, helping you maintain consistent cycling and accuracy. Ideal for maintenance intervals, speed builds, or upgrades, this kit provides a complete, ready-to-install solution that keeps your bolt carrier group functioning at peak efficiency through rigorous training, hunting, or duty use.