The Wheeler Engineering Delta Series AR Carbon Multi-Scraper Cleaning Wrench is a pocket cleaning tool for the AR-15/M16. This durable tool allows you to remove baked-on carbon in normally inaccessible areas of your AR-15. Don't let carbon build-up affect your shooting. Use the AR Carbon Multi-Scrapper Wheeler Delta Series to remove carbon in hard-to-reach places. This compact stainless steel tool is designed to clean 11 key surfaces of the rocker arm assembly ("BCG"). Thanks to its compact dimensions, you can keep it practically anywhere.