5 Best Red Dot For Sig P320 [Updated 2023]

Here are the best red dots for Sig P320 that are compatible right out of the box. These are proven optics on many other pistol platforms, and they will do great on the P320.

Let's check it out...

Best Red Dot For Sig P320

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Top 3 Options

Best Overall

Largest FOV

Best Durability

fn 509 ls edge low light shoot

The Holosun 507C ACSS Vulcan is an upgrade to the original 507C X2 model, and this time it features the ACSS Vulcan reticle specifically designed to help the shooter find the dot faster and track the dot better if lost in the field of view.

Even faster than Trijicon SRO in some cases.

  • Made of durable 7075 T6 aluminum and recommended for Sig P320 compact pistols
  • Holosun 507C ACSS Vulcan is an upgraded version of the 507C X2 model
  • 250 MOA size outer ring acts as a directional indicator to help recenter the reticle
  • User can turn off the outer ring and use the ACSS triangle reticle for precise aiming

Leupold DeltaPoint Pro - Best Lens Protection

sig p320 xfive leupold deltapoint pro
  • The Leupold DeltaPoint Pro 6 MOA is a popular red dot sight for the Sig P320, especially for full size or compact model
  • It has a larger dot that is easy to see and helps the shooter acquire the target quickly
  • The DeltaPoint Pro has a long history of reliability and is known for its durability
  • It is a good value for the price and is suitable for competition shooting on other firearms
  • The top-loading battery access allows for easy battery changes without having to remove the sight

See detailed DeltaPoint Pro reviews and pics here


Sig Sauer ROMEO 1 Pro - Better Brightness Controls

sig p320
  • The ROMEO1PRO is a durable and high-performing miniature red dot sight suitable for use in harsh environments
  • Made from aircraft-grade aluminum, it is resistant to corrosion
  • Features 12 brightness settings, and the buttons are much easier to adjust than Leupold DeltaPoint Pro
  • Built-in MOTAC system saves battery when the optic is not in use
  • Aspheric lens made of molded glass and upgraded coatings for excellent light transmittance and zero distortion, allowing for fast and accurate target acquisition
  • Comes with a rugged protective shroud for added durability

Trijicon RMR - Best Durability

(M17, M18, X Five slides require RMR hole drilling)

sig p320 rmr
  • The Sig P320 with Trijicon RMR Type 2 is suitable for duty carry and personal defense
  • RMR Type 2 has been redesigned for improved durability and reliable performance with a tighter battery compartment
  • Battery must still be accessed from the bottom, requiring re-zeroing after a change

Trijicon SRO - Largest FOV

sig p320 trijicon sro
  • The Trijicon SRO is a red dot sight that is designed to be mounted on a Sig P320 pistol
  • It has a rugged and durable design, with a body that is similar to the Trijicon RMR (Ruggedized Miniature Reflex)
  • The SRO has a large circular field of view window that allows the shooter to quickly locate the reticle and take follow-up shots, even if their head is slightly off-center
  • The top-loading battery design is a convenient feature as it allows users to easily change the battery without having to remove the optic and re-zero it
  • The SRO is highly recommended for range and competition shooting due to its fast target acquisition and reliable performance

Check out the Trijicon SRO reviews here

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Common FAQ

Sig P320 Red Dot Compatibility

Sig p320 RX PRo AXG R1P slides

Referenced CHPWS

The new P320 Pro cut and P320 RXP are conceal carry ready with slide optic cut for Sig M18 with ROMEO 1 Pro and Deltapoint Pro.

Check out CHPWS plate they have a large selection of optic plates specifically cut for each different variant of P320 Slides.

If your slide ONLY has the ROMEO 1 Pro cut, then a P320 RMR, SRO and Holosun 507C can't be mounted unless you send the slide to a shop to get it milled.

If your slide features the RMR and ROMEO 1 Pro/DPP holes, then all you need is a RMR plate.

Check out the best aftermarket P320 optic ready slides here