White Label Armory is your source for high quality, American made, firearm OE style firearm components. Multiple CMMs and vision inspection systems, as well as a robust QC process, ensure that your parts match print and exceed expectations. Manufactured to Mil-Spec quality, these parts are sure to be great for your next AR build.The AR15 Bolt Carrier Group Rehab Kit in 5.56 brings together essential, heat-treated internal components to restore a worn bolt carrier group toward factory performance. It's a practical option for builders and gunsmiths maintaining a 5.56 AR-15 BCG that has seen heavy round counts, helping return reliability without replacing the entire assembly. Use this kit as part of routine maintenance or when refreshing an aging carrier. Confirm the kit components match your existing parts before installation, and inspect your bolt and carrier for wear during reassembly. FeaturesFiring Pin Materia: 8640 steel, black nitride finishExtractor Material: 4140 billetFiring ...