Best Red Dots for the SIG P320 (M17)
Red dots for the SIG P320-M17 and the wider P320 family. The optic cut uses the ROMEO1Pro / DeltaPoint-class footprint, so this full-size duty 9mm pairs naturally with a rugged enclosed-emitter dot. These are the optics that fit and how each one mounts.
Updated
11 Red Dots that fit the SIG P320
Compare all 11 Red Dots in a table
| Optic | Type | Spec | Fit | MSRP |
|---|---|---|---|---|
| Athlon Midas Burst Pistol | Red dot | 3 MOA dot | Direct fit | $230 |
| Bushnell RXS-100 | Red dot | 4 MOA dot | Direct fit | $150 |
| Bushnell RXS-250 | Red dot | 4 MOA dot | Direct fit | $200 |
| EOTech EFLX Mini | Red dot | 6 MOA dot | Direct fit | $389 |
| Gideon Optics Storm | Red dot | 6 MOA dot | Direct fit | $230 |
| Leupold DeltaPoint Pro | Red dot | 2.5 MOA dot | Direct fit | $520 |
| SIG Romeo1Pro | Red dot | 3 MOA dot | Direct fit | $480 |
| SIG Sauer Romeo-X Pro | Red dot | 2 MOA dot | Direct fit | $480 |
| SIG Sauer Romeo2 | Red dot | 2 MOA dot | Direct fit | $800 |
| Vortex Defender-ST | Red dot | 3 MOA dot | Direct fit | $399 |
| Vortex Venom Enclosed | Red dot | 6 MOA dot | Direct fit | $350 |
11 of 11 optics
Red dots & reflex sights (11)
1x, no magnification — fast target acquisition up close.
- Athlon Midas Burst PistolDirect Fit
3 MOA dot · Enclosed · 50k-hr battery · 1.27 oz
Where to buy≈ $230 MSRP - Bushnell RXS-100Direct Fit
4 MOA dot · Open · 5k-hr battery · 1.3 oz
Where to buy≈ $150 MSRP - Bushnell RXS-250Direct Fit
4 MOA dot · Open · 50k-hr battery · 1.4 oz
Where to buy≈ $200 MSRP - EOTech EFLX MiniDirect Fit
6 MOA dot · Open · 25k-hr battery · 1.4 oz
Where to buy≈ $389 MSRP - Gideon Optics StormDirect Fit
6 MOA dot · Open
Where to buy≈ $230 MSRP - Leupold DeltaPoint ProDirect Fit
2.5 MOA dot · Open · 1k-hr battery · 2 oz
Where to buy≈ $520 MSRP - SIG Romeo1ProDirect Fit
3 MOA dot · Open · 20k-hr battery · 1 oz
Where to buy≈ $480 MSRP - SIG Sauer Romeo-X ProDirect Fit
2 MOA dot · Open · 20k-hr battery · 1.15 oz
Where to buy≈ $480 MSRP - SIG Sauer Romeo2Direct Fit
2 MOA dot · Enclosed · 25k-hr battery
Where to buy≈ $800 MSRP - Vortex Defender-STDirect Fit
3 MOA dot · Open · 25k-hr battery · 1.48 oz
Where to buy≈ $399 MSRP - Vortex Venom EnclosedDirect Fit
6 MOA dot · Enclosed · 20k-hr battery · 1.75 oz
Where to buy≈ $350 MSRP
Want a different optic type? See every optic that fits the SIG P320.
Fit is research-verified; suitability is general guidance based on the platform's typical effective range — not a hard rule.
Common questions
- Which Red Dots are best for the SIG P320?
- All Red Dots listed below are verified to fit the SIG P320. The best one depends on how you'll use it — we flag which ones suit the gun's typical effective range, and you can compare dot size or magnification, durability, and price to choose. There's no single winner for everyone.
- How many Red Dots fit the SIG P320?
- 11 Red Dots in our catalog are confirmed to fit the SIG P320, each shown with the exact plate or mount it needs.
- Do these Red Dots mount directly, or need a separate mount on the SIG P320?
- It varies by model — each one shows whether it mounts directly to the SIG P320's rail or cut, or needs a specific plate or mount. Fitment is verified per optic, not assumed.