Labor Day gun deals are live through Monday. See the deals

P320 AXG Pro optic footprint: what red dots fit

SIG P320 AXG Pro

The P320 AXG Pro carries SIG's Pro-Cut slide, a dedicated optic pocket with no adapter plate in the stack. SIG states the optic-ready Pro-cut slide is compatible with the ROMEO1PRO, ROMEO2, and PRO optics for a direct-to-slide fit without adaptor plates, and the PRO pattern shares its screw spacing with the Leupold DeltaPoint Pro, so DeltaPoint Pro class dots seat on the slide too. Pro-Cut slides in this family also carry Trijicon RMR and Holosun 507C threaded holes inside the pocket, which is why RMR-pattern optics bolt down without a plate. Aimpoint ACRO, Holosun 509T, Holosun EPS, and the micro Shield RMSc and Holosun K footprints sit outside what the factory cut accepts.

AXG is a grip module, and that is where owners go wrong. The machined aluminum AXG module can be bought on its own and fitted to any P320 fire control unit, but swapping it changes nothing about the slide, and the slide is what decides what mounts. An AXG grip under a solid slide is still a pistol with no pocket. The AXG Pro earns its optic answer from the Pro-Cut slide SIG ships on it, which also keeps its XRAY3 rear sight in a dovetail when the dot goes on.

Optics that fit
30
No plate needed
30
Plate required
0
Footprints accepted
Trijicon RMR / Holosun 507CLeupold DeltaPoint Pro
Open the interactive checker on the P320 AXG Pro
Disclosure: This page contains affiliate links. We may earn a commission on purchases at no cost to you. Read the affiliate disclosure

Mounts directly (DeltaPoint Pro / RMR footprint)(30)

These optics carry the DeltaPoint Pro / RMR footprint the slide is cut for. Screws, recoil bosses, and pocket all line up, so they seat on the slide with no plate.

C&H Direct Mount Optic for SIG Sauer Pro-Cut red dot for P320 AXG Pro
C&H Precision

C&H Direct Mount Optic for SIG Sauer Pro-Cut

$249.99

C&H direct-mount pistol optic for SIG Sauer optics-ready Pro-Cut pistols including P320, P226, P229, and P220.

Check price
C&H Precision EDC-XL red dot for P320 AXG Pro
C&H Precision

C&H Precision EDC-XL

$224.99Holosun 507CRMR

RMR-footprint enclosed-emitter carry and duty optic with a larger sight window

Check price
Cyelee Chameleon SRS8 red dot for P320 AXG Pro
Cyelee Optics

Cyelee Chameleon SRS8

$199.99Holosun 507CRMR

Slim RMR-footprint dot with a large 8 MOA reticle and Cyelee's STIG-RS lens treatment

Check price
Gideon Optics Rock red dot for P320 AXG Pro
Gideon Optics

Gideon Optics Rock

$199.99RMR

RMR carry optic with 3 MOA dot and 45 MOA circle-dot choices in a shorter housing.

Check price
Osight C (RMR Footprint, Side-Load Battery) red dot for P320 AXG Pro
Osight

Osight C (RMR Footprint, Side-Load Battery)

$179.99RMR

Open-emitter RMR-footprint red dot with a wide window, side-loading CR1632, and a switchable 3 MOA + 32 MOA MRS reticle.

Check price
C&H Precision COMP red dot for P320 AXG Pro
C&H Precision

C&H Precision COMP

$299.99Holosun 507CRMR

RMR-footprint open-emitter competition optic with a wide window and multi-reticle options

Check price
C&H Precision COMP Max red dot for P320 AXG Pro
C&H Precision

C&H Precision COMP Max

$339.95Holosun 507CRMR

Large-window RMR-footprint competition optic with 2 MOA dot and 38 MOA circle options

Check price
Cyelee Wolf EDG red dot for P320 AXG Pro
Cyelee Optics

Cyelee Wolf EDG

$279.99Holosun 507CRMR

Fully enclosed RMR-footprint pistol dot with a gas-filled housing and side-loading CR1620

Check price
Gideon Optics Granite Competition RMR red dot for P320 AXG Pro
Gideon Optics

Gideon Optics Granite Competition RMR

$249.99RMR

Large-window RMR competition optic with a 6 MOA red or green dot and 1 MOA adjustments.

Check price
Gideon Optics Omega red dot for P320 AXG Pro
Gideon Optics

Gideon Optics Omega

$229.99RMR

Large-window RMR optic with 3 MOA dot and 45 MOA circle-dot reticle options.

Check price
Holosun 507C X2 red dot for P320 AXG Pro
Holosun

Holosun 507C X2

$232.99Holosun 507CRMR

Multi-reticle micro red dot with solar failsafe and shake awake

Check price
Holosun 507C X3 red dot for P320 AXG Pro
Holosun

Holosun 507C X3

$299.99Holosun 507CRMR

Third-gen multi-reticle pistol dot with photodiode sensor, Solar Failsafe, and RMR footprint

Check price
Holosun 508T X2 red dot for P320 AXG Pro
Holosun

Holosun 508T X2

$369.99RMR

Titanium-housed open-emitter micro red dot on the RMR footprint with a larger window than the 507C.

Check price
Leupold DeltaPoint Pro red dot for P320 AXG Pro
Leupold

Leupold DeltaPoint Pro

$449.99DeltaPoint Pro

American-made competition optic with excellent glass clarity

Check price
Osight 3 MOA Green (RMR, Magnetic Charging) red dot for P320 AXG Pro
Osight

Osight 3 MOA Green (RMR, Magnetic Charging)

$229.99RMR

Original Osight reflex sight on the RMR footprint with a single 3 MOA dot, magnetic charging cover, and aluminum housing.

Check price
Osight SE DPP Enclosed Red Dot red dot for P320 AXG Pro
Osight

Osight SE DPP Enclosed Red Dot

$239.99DeltaPoint Pro

Enclosed-emitter red dot built on the DeltaPoint Pro footprint, with a 0.91 x 0.71 inch window, switchable 2 MOA dot and 32 MOA circle, and a side-loading CR1620 tray.

Check price
Osight X (RMR Footprint, Magnetic Charging) red dot for P320 AXG Pro
Osight

Osight X (RMR Footprint, Magnetic Charging)

$229.99RMR

Open-emitter RMR-footprint red dot with a wide window, OAL housing, and a magnetic charging cover for rechargeable operation.

Check price
Osight XE AMRS Enclosed (RMR Footprint) red dot for P320 AXG Pro
Osight

Osight XE AMRS Enclosed (RMR Footprint)

$249.99RMR

Enclosed-emitter duty red dot on the RMR footprint with the AMRS five-reticle system and a field-swappable side-loading CR1632 battery.

Check price
Osight XR Enclosed (RMR Footprint) red dot for P320 AXG Pro
Osight

Osight XR Enclosed (RMR Footprint)

$299.99RMR

Duty-rated enclosed-emitter red dot on the RMR footprint with a 2/6+32 MOA multi-reticle system and a magnetic charging cover.

Check price
Riton 3 Tactix PRD 3 red dot for P320 AXG Pro
Riton Optics

Riton 3 Tactix PRD 3

$329.99RMR

An RMR-footprint open dot with three selectable reticles, a 50,000 hour CR1632, IPX67 sealing, and a Picatinny adapter in the box at $329.99.

Check price
SIG Romeo1 Pro red dot for P320 AXG Pro
SIG Sauer

SIG Romeo1 Pro

$238.76DeltaPoint Pro

Full-size SIG optic for P320 X-series and similar platforms

Check price
Swampfox Kraken Closed Emitter red dot for P320 AXG Pro
Swampfox

Swampfox Kraken Closed Emitter

$249.99Holosun 507CRMR

Budget closed-emitter pistol red dot that ships with both RMR and Glock MOS plates

Check price
Vector Optics Frenzy FLEX Titanium red dot for P320 AXG Pro
Vector Optics

Vector Optics Frenzy FLEX Titanium

$211.65RMR

Titanium RMR-footprint pistol dot with a large aspheric window and selectable reticles

Check price
Vortex Defender-ST Enclosed Solar red dot for P320 AXG Pro
Vortex

Vortex Defender-ST Enclosed Solar

$319.49DeltaPoint Pro

Closed-emitter DPP-footprint pistol red dot with solar assist and a multi-reticle.

Check price
Vortex Defender-ST Micro Red Dot red dot for P320 AXG Pro
Vortex

Vortex Defender-ST Micro Red Dot

$249.49DeltaPoint Pro

All-purpose DPP-footprint pistol red dot with top-load CR2032 and Glock MOS plate.

Check price
Vortex Defender-XL Micro Red Dot red dot for P320 AXG Pro
Vortex

Vortex Defender-XL Micro Red Dot

$339.49DeltaPoint Pro

Large-window pistol red dot on the DeltaPoint Pro footprint with top-load battery

Check price
Holosun SCS-320-GR red dot for P320 AXG Pro
Holosun

Holosun SCS-320-GR

$399.99DeltaPoint Pro

Solar-powered enclosed pistol optic with direct SIG P320 fit and DPP footprint compatibility

Check price
Trijicon RCR red dot for P320 AXG Pro
Trijicon

Trijicon RCR

$718.99RMR

Trijicon's enclosed-emitter pistol red dot on the RMR footprint with top-load battery

Check price
Trijicon RMR Type 2 red dot for P320 AXG Pro
Trijicon

Trijicon RMR Type 2

$588.99RMR

The original pistol red dot that defined the category

Check price
Trijicon SRO Green Dot red dot for P320 AXG Pro
Trijicon

Trijicon SRO Green Dot

$639.99RMR

Green-LED 2.5 MOA version of the SRO announced May 2026: same wide circular window, RMR footprint, and top-loading CR2032, in black or coyote brown.

Check price

P320 AXG Pro optic fitment FAQ

What optic footprint does the P320 AXG Pro use?

The P320 AXG Pro carries SIG's Pro-Cut slide, a dedicated optic pocket with no adapter plate in the stack. SIG states the optic-ready Pro-cut slide is compatible with the ROMEO1PRO, ROMEO2, and PRO optics for a direct-to-slide fit without adaptor plates, and the PRO pattern shares its screw spacing with the Leupold DeltaPoint Pro, so DeltaPoint Pro class dots seat on the slide too. Pro-Cut slides in this family also carry Trijicon RMR and Holosun 507C threaded holes inside the pocket, which is why RMR-pattern optics bolt down without a plate. Aimpoint ACRO, Holosun 509T, Holosun EPS, and the micro Shield RMSc and Holosun K footprints sit outside what the factory cut accepts.

Do I need an adapter plate to mount a red dot on the P320 AXG Pro?

No. The P320 AXG Pro slide is cut for the DeltaPoint Pro / RMR footprint and DeltaPoint Pro / RMR optics bolt straight to the slide.

Does the Holosun 507C X2 fit a P320 AXG Pro?

Yes. The Holosun 507C X2 uses the DeltaPoint Pro / RMR footprint that the P320 AXG Pro slide is cut for, so it bolts straight to the slide with no adapter plate.

Does the Trijicon RMR Type 2 fit a P320 AXG Pro?

Yes. The Trijicon RMR Type 2 uses the DeltaPoint Pro / RMR footprint that the P320 AXG Pro slide is cut for, so it bolts straight to the slide with no adapter plate.

Does the Leupold DeltaPoint Pro fit a P320 AXG Pro?

Yes. The Leupold DeltaPoint Pro uses the DeltaPoint Pro / RMR footprint that the P320 AXG Pro slide is cut for, so it bolts straight to the slide with no adapter plate.

Does adding an AXG grip module make a P320 optic ready?

No. The AXG module is a grip that closes around the fire control unit, and optic mounting happens on the slide. An AXG module fitted to a P320 with an uncut slide leaves you with the same pistol and no pocket for a dot. The P320 AXG Pro takes optics because SIG ships it with a Pro-Cut slide, not because the grip module is aluminum.

What does Pro-Cut mean on a SIG slide?

Pro-Cut is SIG's name for the optic-ready slide treatment on its Pro models, and SIG describes it as compatible with the ROMEO1PRO, ROMEO2, and PRO optics for a direct-to-slide fit with no adaptor plate. Plate and optic makers use the same label across SIG's optics-ready P320, P226, P229, and P220 slides, and C&H Precision builds a red dot with that Pro-Cut footprint machined into the optic body.

Keep reading

Optic footprints for other SIG Sauer models

Every pistol with a footprint page