How a Pump Shotgun Works



A 3D animation showing how a Remington 870 pump-action shotgun works. Cinema 4D was used to create each individual part, as well as animating everything. Substance Painter was used to create the wood stock and fore-end textures. Corona renderer was used for final output of lighting and textures.
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My website: https://bit.ly/37D0kNR
Voiceover: https://bit.ly/2L4o8CN
Music: https://bit.ly/30uYPSp

Special thanks to Grant Inouye for his help in creating the initial fire explosion inside the shotgun shell!

Chapters:
0:00 Intro
0:26 Ammunition Loading
0:57 Shell Carrier
1:13 Shell Latches
1:47 Bolt Locking
1:57 Firing Sequence
2:17 Shotgun Shell Anatomy
2:33 Shot Propulsion
2:51 Extraction & Ejection
3:10 Hammer / Trigger Reset
3:41 Credits

These animations take considerable time and resources to make, often taking 6+ months to produce. Redistribution of my 3D animations is not permitted without first contacting me for instructions and options.

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33 thoughts on “How a Pump Shotgun Works

  1. The whole thing seems to me to be very prone to errors. Does this mechanism really work that well? The material from which this delicate mechanism in the weapon is made of should actually bend or break very quickly. The forces that act on the small components are enormous, right? I just can't imagine it that this fine mechanism can withstand thousands of shots without anything breaking.
    By the way, I'm a TOTAL LAYMAN in this area. But I'm very interested in the whole process. These fine materials have to be so extremely resistant. Can someone explain to me what they're made of? This extremely resistant material is made of titanium perhaps? A fine mechanism made of normal steel would never be able to withstand these forces for a thousand shots? Or? šŸ¤”

  2. Need to save this in case of a nuclear and all is lost and am the only human alive fighting the ordes of dead zombies that way ill be king of the planet knowing how to make guns

  3. Now my question is, can you still commit war crimes with it by holding down the trigger and quickly cocking the gun… Or is that just an old model thing from WW1?

  4. What Iā€™m taking from this is that there is a round in the chamber, there are rounds in the tube waiting to make their way to the chamber, and thereā€™s a round that stores itself in the carrier as well?

  5. This was fantastic!

    You should animate the mythical Remington 700 with a McMillan A4 stock, Badger Ordnance M5 DBM and perhaps a Leupold Mk4 6.5-20×50 LR/T

    Yeehaw

  6. This animation shows precisely how shotguns like these are not drop safe. The sear can move independently from the trigger so putting it on safe with the trigger blocked does not block the sear. Don't have your shotguns chambered at home guys. Thanks for this amazing animation. The best one on Youtube by a long shot.

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