Description
If you’ve been looking at the P320-FLUX LEGION, you already know it’s the chassis system that turns a SIG P320 into a subcompact PDW without an NFA stamp. We’ve been stocking these since mid-2024, and it’s been such a regular reorder item we now keep a demo unit in our shop Glock — says enough. This version is the Fast Ship option, meaning we have it boxed and ready to go from our Indianapolis warehouse. Weighs 7.8 oz on our scale, so you’re adding minimal bulk to your carry setup.
Key Highlights
- Drop-in design — replaces the factory grip module on your P320; no permanent modifications needed.
- Integrated folding brace — gives you a stable three-point contact without the ATF paperwork of a stock.
- Full-length Picatinny rail — mount a light, laser, or foregrip to tailor the setup to your mission.
- Ambidextrous controls — magazine release and slide catch work for left or right-handed shooters.
- Compact footprint — still fits in a backpack or range bag, making it a solid truck gun or home defense option.
| Compatibility | SIG Sauer P320 (full-size, carry, compact) |
| Material | 6061-T6 aluminum chassis, polymer grip |
| Weight (measured) | 7.8 oz |
| Overall Length | 8.5 in (folded), 15.2 in (extended) |
| Brace Type | Folding arm brace (non-NFA) |
| Rail | Full-length Picatinny (MIL-STD-1913) |
| Finish | Hardcoat anodized black |
| Warranty | Manufacturer lifetime |
Does this work with all P320 models?
Yes, the FLUX LEGION fits full-size, carry, and compact P320 frames. It won’t work with the X-Five or X-Ten models due to different slide profiles. If you’ve got a standard P320, you’re good to go.
Is this considered a stock or a brace?
It’s an arm brace, so it’s not regulated as a short-barreled rifle under the NFA. That means no tax stamp, no engraving, and no waiting on ATF approval. Just attach it and shoot.
How fast does this ship?
We keep these in stock in our Indianapolis warehouse. Order before 3 PM EST on a business day, and it goes out the same day. We use discreet packaging — no logos or product names on the box.
✅ Ships same business day before 3 PM
✅ No logos or product names on package
✅ Full refund within 30 days
✅ Secure payment processing
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