Wow I'm amazed nothing ever happened to anyone using this thing. The stock fitting around the gas tube was done so poorly that the piston was out of alignment and the assembly wasn't locked in place. It was just sitting there.
Before pic and after pic
Yeah glad it wasn't anything major. Fixed alignment on the gas system, blued the bolt etc, modified the bolt for feed lip clearance, blued and color filled the rear sight and pinned the stock. Contemplating a spring loaded firing pin. Any other suggestions?