REXFIRE Tangdao Mag MOD for Diana

Designer

Compatibility

Compatible with Diana launchers. A Diana 10-dart magazine is required to complete the modification. No additional hardware is needed.

Feature

Expanding the magazine capacity to 27 or 28 rounds works without any issues. The constant-force spring operates normally, and feeding and firing function properly.

3D Print File

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$16.00 GST included

We use different filament brands to offer more color and finish options. Some high-stress parts use PA6CF for durability and cannot be customized. PETG HF has a more matte finish than standard PETG, with slightly lower strength.
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Updated 02/06/2026

Previously, the seam was positioned on the inside, which I suspect may have contributed to a higher chance of dart jams. I’ve uploaded updated files with the seam moved to a different location, available through the Mega link on this page. Any testing and feedback would be greatly appreciated.


Three magazine lengths are available: 15-dart, 20-dart, and 28-dart (marked as 30, though loading 27–28 foam darts feels the most comfortable in practice). The 20-round and 28-round versions offer the most noticeable capacity increase, while the 15-round version leans more toward aesthetics—especially now that HC has released a 16-round factory magazine.

The design files themselves are open source, so you’re more than welcome to download them and print one yourself. The designer has been running this magazine for over a year with no issues at all.

The only real downside is the long print time, which unfortunately means we can’t price it as low as we’d like.

Why Tangdao

This is just a regular extended magazine.

We just named the mod Tangdao for fun.

Next time there’s a chance to design new mag mods, maybe a designer would be willing to truly base them on melee weapons as a theme — or on similar accessories.