Carbon is the enemy of black guns. Regular use quickly builds up carbon on bolts and ring pins. The moving parts on an AR15 require a precision-scraping solution, so Real Avid developed The AR15 Scraper - the first scraper designed to clean 12 critical surfaces on the bolt carrier group. The innovative, double-ended swivel design saves time by removing carbon quickly and easily from the entire bolt carrier group. Carbon just ran out of places to hide. Includes: Firing pin large diameter scraperBolt tail exterior scraperBehind-cartridge extractor scraperFiring pin small diameter scraperBolt tail shoulder scraperCotter pin pullerBolt cam pin scraperBolt waist scraper1/4" bit driverBolt carrier scraper (2)Between bolt lugs scraperBolt tail interior scraperBolt face scraper | Real Avid AR15 Scraper