SIG SAUER P320 FULL-SIZE

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What the compatibility labels mean

How we knowHow we check compatibility

Lab testedFit checked by Firearm Lab for the recorded setup.
Documented fitmentSupported by manufacturer, partner, or reviewed community evidence.
Interface matchMounting details match, but this exact model and part have not been confirmed to fit together.

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Model details

Manufacturer

SIG SAUER

Model & version

P320 FULL-SIZE · FULL-SIZE

Mounting details

MIL-STD-1913 Picatinny, Leupold DeltaPoint Pro, SIG SAUER P320 PRO optic cut (ROMEO1PRO / DPP pattern, P320 / M17 / M18 / AXG slides)

Compatibility records

212

Lights & rail fitment

Lights & Lasers

63 listed

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Optics & footprint adapters

Optics

25 listed

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Optic Plates

20 listed

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Sights

37 listed

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Barrels & comps

Barrels

13 listed

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Compensators

9 listed

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Grip & magwells

Magwells

1 listed

ANR Design
P320 ANVL Magwell
Manufacturer documented

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Extended Magazine Releases

1 listed

Armory Craft
Extended Magazine Release Button: P250 / P320
Manufacturer documented

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Base Pads

8 listed

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Magazines

7 listed

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Triggers & internals

Triggers

9 listed

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Takedown levers

1 listed

GoGun USA
Gas Pedal Assist - Thumb Rest for Sig P320 X5, X10, M17, M18, AXG, P250 (All Generations)
Manufacturer documented

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Recoil Springs

3 listed

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Also on this pistol

Holsters

9 makers

Blackhawkchecked 2026-11-01
Bravo Concealmentchecked 2026-11-01
Concealment Expresschecked 2026-11-01
DeSantis Gunhidechecked 2026-11-01
Galcochecked 2026-11-01
Safarilandchecked 2026-11-01
Tenicorchecked 2026-11-01
Tier 1 Concealedchecked 2026-11-01
Vedder Holsterschecked 2026-11-01

Check each manufacturer’s options for your model, light and optic.

Holster makers (9)

Slides

6 listed

View all 6 parts

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Categories with no listings (3)

About the SIG SAUER P320 FULL-SIZE

Type: Pistol
Manufacturer: SIG SAUER
Model & version: P320 FULL-SIZE · FULL-SIZE
Caliber: 9mm
Mounting details: MIL-STD-1913 Picatinny, Leupold DeltaPoint Pro, SIG SAUER P320 PRO optic cut (ROMEO1PRO / DPP pattern, P320 / M17 / M18 / AXG slides)
Width: 1.25"
Height: 5.5"
Weight: 28.3 oz
Barrel length: 4.7"
Overall length: 8"

Lights & Lasers

EPL Duty (Black)

P.ID

APLc (Universal)

PL350G3 OKWv2 Light Package

Optics

RXS-100 Reflex Sight

EFLX CE Pistol Optic

SCS-320

DeltaPoint Pro

Optic Plates

SIG P320 Legion (M17 / M18) w/ R1P/DPP Cut to Trijicon RMR / RMR HD / SRO / Holosun 407C / 507C / 507Comp / 508T / C&H EDC-XL / COMP / COMP MAX / Olight Osight X w/ Dovetail for GLOCK compatible sights

SIG P320 Optics Ready Mount

Optic Mount for Sig Sauer P320 Pro Cut Slides

SIG P320 Legion (M17 / M18) w/ R1P/DPP Cut to Trijicon RMR / SRO / RCR / Holosun 407C / 507C / 507Comp / 508T / C&H EDC-XL / COMP / COMP MAX / Olight Osight X w/ Dovetail for GLOCK compatible sights STEEL

Sights

MEPRO CRIS MPO BACK UP IRON SIGHTS

OPTICS READY STEALTH SERIES FOR SIG SAUER

REAR SIGHT ASSY, P320, X-RAY3, SIGHT PLATE, SIGHT SCREWS, BLK

Strike Iron Sights - Standard Height

Barrels

Threaded Barrel for FULL-SIZE Sig P320

Sig P320 Full QPQ Black Non-Threaded Non-fluted LCI

Faxon Match Series Barrel for Sig P320 Full Size with Patented Flame Fluting, 416-R Stainless, Threaded, Chameleon PVD

GGP 320 Full Size Threaded Barrel

Compensators

Sig Sauer Compensators - for 9mm P320 & P226, P228, P229, P225/P6

HC320 Sig P320 Compensator

Velocity Defense Compensator for Sig P320

PMM Barrel and Compensator Combos for Sig P320

Magwells

P320 ANVL Magwell

Extended Magazine Releases

Extended Magazine Release Button: P250 / P320

Base Pads

Sig Sauer P320 Carry Magazine Baseplate

SIG P320 / P385 / P211 GTO 9mm / 40 S&W, PLUS-0 Base Pads

Sig Sauer P320 | P211 | P385 Magazine Base Pads Aluminum +0

NDZ Magazine Floor Base Plate for Sig Sauer P320 P250 9mm .357 .40 Cerakote Burnt Bronze

Magazines

A2-320 17-Round

P211/P320 FULL/CARRY 9MM 23RD EXTENDED MAGAZINE

P250, P320 FULL/CARRY/M17 9MM 17RD MAGAZINE

P250,P320 9MM 30RD EXTENDED MAGAZINE

Triggers

SIG P320 COMPATIBLE DROP IN TRIGGER

P320 Adjustable Hybrid Trigger

Sig Sauer P320 Trigger Kit

TITANIUM SIG P320 COMPATIBLE DROP IN TRIGGER

Takedown levers

Gas Pedal Assist - Thumb Rest for Sig P320 X5, X10, M17, M18, AXG, P250 (All Generations)

Recoil Springs

P320 Full Size / P320 X5 & X5 Legion Solid Guide Rod & Recoil Spring Tuning Kit

Sig Sauer P320 Full Size 4.7" Barrel

TUNGSTEN P320 Full Size / P320 X5 X5 Legion Guide Rod

Holsters

Slides

IRON SIGHT SLIDES FOR SIG P320 FULL SIZE

GGP320 Slides

Velocity Defense/Flux Raider V1 Slide for Sig P320 F

P320 9mm Full-size Special Order Slide

About the SIG SAUER P320 FULL-SIZE