_The model is available for free for all my membership subscribers (and available to buy individually). [Check out my membership tiers!](https://than.gs/u/803093?plans=true&affiliateCode=Jaatinen3D)_

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Ever since I made the [Tickler BB-13](https://than.gs/m/1034516?affiliateCode=Jaatinen3D), I've wanted to design a double barrel shotgun using the same mechanism. Here it finally is and it's ready to kick ass!

See it in action here: https://www.youtube.com/watch?v=xsVJvoRTt0Y

Includes a complimentary **Shotgun Shell Weapon Charm**! The weapon charm chain has an end clip that is compatible with all my Ringchaku designs, so you can attach any Ringchaku end to it! Although most of them are probably too big... But stay tuned for more weapon charms in the future!

**Assembling this requires no glue or bolts or nuts! Apart from the printed parts, you'll only need:**
- One pen spring *(max 5mm diameter, 15-20mm uncompressed length, <9mm length compressed)*
- Two rubber bands (10-30mm diameter)

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➡️ [There's a display stand available for this gun!](https://than.gs/m/1056358?affiliateCode=Jaatinen3D) ⬅️

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**Printing tips:**
All the parts are oriented in the correct printing orientation.

Use supports for *Trigger Assembly Cover Left* and *Trigger Assembly Cover Right*. All others are up to how your printer can handle small bridges and overhangs.

I recommend printing the *Barrel Lock Latch* in a "slippery" filament (not matte) because otherwise you might not be able to slam the barrel closed due to friction between the barrel and the latch.
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**Assembly:**
Watch the included assembly video!

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If you don't have BBs, I've included a printable bullet that works at least as well as a BB!

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_There's been a rumor of a_ charming _little mystery... You should check it out, maybe there's something in it for you? [I've marked it on your map.](https://jaatinen3d.com/arvoitus/)_

vg bentley

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Rutku BB-20 — Fully 3D-printable airsoft shotgun with shells