The AR Stock Trap Door!
This guide details how to access the often-stiff trap door compartment found on the buttstocks of M16A1, M16A2, and AR-15 rifles. Originally intended for cleaning kits during the Vietnam War era, this feature remains useful for storing batteries or spare parts on modern retro builds. The video emphasizes the need for a tool to pry open newer or stiff trap doors, highlighting a practical aspect of maintaining older rifle designs.












