Additionally, if the gun's recoil spring is not properly tensioned, this can also cause a jam…Finally, if the gun is dropped, ...

The double recoil springs and magazine spring made extracting the magazine extremely difficult. A weak striker spring ...

which I’ll get to later—which means the guns use recoil to function. When you pull the trigger, the entire shotgun moves backward but the two-piece bolt stays in place, compressing a spring inside the ...