Originally posted by RavishingEddie
Wow. I had no idea that Pump mags allowed you to prevent you from double feeding the ball even after you cocked the handle back multiple times. 
How does this work. I am trying to imagine how it works but I can't.
If someone could explain please! I am very interested now in building something awesome.
How does this work. I am trying to imagine how it works but I can't. If someone could explain please! I am very interested now in building something awesome.
On a Pump Mag there is a "wave" spring that sits behind the bolt. This will stop the bolt from catching the sear. The pump rod on the pump handle push's the bolt back enough for the sear to catch the bolt. Thats really it.. To make it a semi again is just remove the "wave" spring and your back to semi.
Ken W
As Ken posted many moons ago. So the wave spring is the key. Once you set the sear with the first pump stroke and a ball drops in front you are done. Any additional strokes just moves the pump arm but doesn't move the bolt.
Hope this helps.
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