Fullauto AR-18 vs. Brownells BRN180
This guide details the field stripping process for the original Armalite AR-18 and the Brownells BRN-180 upper receiver, highlighting their internal differences and similarities. The video emphasizes the historical evolution from the stamped AR-18 to the modern, machined BRN-180 upper, showcasing the short-stroke piston system and dual guide rod assembly. Expert analysis from a firearms historian provides context on design choices and manufacturing techniques.












