This Controversial Shotgun Sparked an International BAN
This guide details the operation and key features of the Stevens Model 520-30 shotgun, a controversial WWI-era firearm known for its slam-fire capability and unique 'humpback' design. The information is presented with high authority, drawing on deep subject matter expertise in historical firearms and WWI/WWII small arms history. It covers the shotgun's historical context, mechanical design, and operational aspects.











