The AR15 Field Guide puts critical maintenance instruction in a compact, chemical resistant format. Loaded with easy-to-understand illustrations, it shows you how to disassemble the rifle for thorough carbon scraping and cleaning. It illustrates critical lubrication points to prevent common AR15 malfunctions.HOW TO CLEAN AND KEEP YOUR AR15 READY AND RELIABLE. Easy to follow, step-by-step field stripping instruction Simple, routine cleaning procedures Where and how to remove built up carbon from 12 critical bolt carrier group surfaces Critical lubrication instruction