Băng đạn Thunderbird (Thunderbird Magazine)

This is my best solution to 3d printed lightning compatible magazines. Big thank you to Redcowl and Dingus for providing inspiration and geometry!

Features

13-degree follower and feed lips

Low dart counts seat better in the mag

Edge Chamfers

Allows push-inserting into AIT lightning blasters

3 different catch spots

One magazine is compatible with multiple blasters!

Screw-in or glue-in flush endcap

Retained feature from the mockingbird mag, allows for the use of a toy screw to keep the endcap FIRMLY attached

More features incoming soon! If you have any suggestions, drop a comment

Blaster Compatibility

Blaster

Compatibility

Notes

Lightning

Designed For

Mag push-inserts

Smiley

Designed For

Thrasher

Designed For

31k

Untested

Likely compatible but untested

Diana

Untested

Likely incompatible but untested

Lailaps

Untested

Likely compatible but untested

Hardware

• 31k style drum spring

• 4-40 x 3/8" screw [Optional, for endcap]

• Toy screw (sized in whatever the Fury-X/Longshot/Thrasher use) [Optional, for endcap]

• Glue [Optional, for endcap]

Customization

Taking a cue from the sure.t mag, here is an onshape link to adjust the dart capacity of the mag and get exceptionally long mag files. 
More customizable features incoming in the future, as I personally don't like sorting through a gazillion files and think customization is supes fun.

Let me customize!

Printing

I have printed mine with between 2 and 4 walls, but extensive durability testing has not been conducted enough for me to recommend anything.
PRINT WITH A BRIM, especially if it's large!

Assembly

1. Slide the end of the spring into the top slot on the top of the mag and then feed it in through the bottom hole to secure it. 

2. Put some lube in the slots where the follower will go. (this is only recommended, it'll probably work without)

3. Use a ruler or ruler like object to push the spring coil to the end of the mag body until it sticks out the bottom. 

4. Sit the spring coil in the slot on the bottom of the follower and then let the follower go into the mag. Hold a finger in the path of the follower at the top of the mag to avoid breaking anything.

5. Attach the endcap with a screw (toy screw from an x shot pro line blaster or similar sized or 4-40 x 3/8" screw)

Updates

7/15/2026
- Published!

7/16/2026 
- Fixed onshape scaling issue
- Adjusted multiplicative factor to reduce dead space