GLOCK 31 Gen 3

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Model & version

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168 documented listings67 fit unconfirmedBrowse categories ↓

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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

GLOCK

Model & version

Glock 31 · Gen 3

Mounting details

Glock Accessory Rail, Glock rear-sight dovetail (standard and Slimline slides)

Compatibility records

235

Sights

103 listed

View all 103 parts

Lights & rail fitment

Lights & Lasers

57 listed

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Triggers & internals

Triggers

45 listed

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Recoil Springs

5 listed

View all 5 parts

Also on this pistol

Holsters

10 makers

Alien Gear Holsterschecked 2026-11-01
Blackhawkchecked 2026-11-01
Bravo Concealmentchecked 2026-11-01
Concealment Expresschecked 2026-11-01
DeSantis Gunhidechecked 2026-11-01
Galcochecked 2026-11-01
PHLsterchecked 2026-11-01
Safarilandchecked 2026-11-01
Vedder Holsterschecked 2026-11-01
We The People Holsterschecked 2026-11-01

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

Holster makers (10)

Barrels & comps

Barrels

7 listed

View all 7 parts

Compensators

1 listed

KKM Precision
31 Match .357Sig Barrel with 9/16×32 Thread 4-Port Compensator (Fits Glock 31 Gen1-4)
Manufacturer documented

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Optics & footprint adapters

Optic Plates

6 listed

View all 6 parts

Grip & magwells

Extended Magazine Releases

2 listed

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Categories with no listings (9)

About the GLOCK 31 Gen 3

Type: Pistol
Manufacturer: GLOCK
Model & version: Glock 31 · Gen 3
Caliber: 357 SIG
Mounting details: Glock Accessory Rail, Glock rear-sight dovetail (standard and Slimline slides)
Weight: 23.28 oz
Barrel length: 4.49"

Other versions of the Glock 31

Compare versions and check the details for your exact model.

GLOCK 31Same recorded mounting details. Check each part for additional requirements.
GLOCK 31 Gen 4Same recorded mounting details. Check each part for additional requirements.

Sights

Glock Front Sight, Extra Tall for Optic/Suppressor

CAP Sight Set for Glock Gen 1-4 10mm/.45/.357

Pistol Sights for Glock 17,19,22,26,31,34,45,47

Sight for Glock, Black Front,

Lights & Lasers

EPL Duty (Black)

WILD2 Pistol Mounted Light

PL350G3 OKWv2 Light Package

TCM-10 Compact Weapon-Mounted Light

Triggers

Glock DROP-IN TRIGGERS

3.5 Trigger Kit Gen 1-6

Trigger Black Shoe Black Safety Gen1 - 4

Factory OEM trigger shoe Upgrade (modified & enhanced)

Recoil Springs

DPM "Captured" for GLOCK 17-22-31-34-35-37 GENS 1-2-3

Glock 17 / 17L / 22 / 24 / 31 Recoil Management System

DPM "SOFT VERSION" FOR GLOCK MODELS: 17-22-31-37 GENS: 1-2-3

Glock 17/22/31 Chrome Silicon Moly Plated Cryogenic Processed Recoil Spring (For use with Sprinco guide rods)

Holsters

Barrels

31 Match .357Sig 4.49"OAL (Fits Glock 31 Gen 1-4)

31 Match .357Sig with 1/2×28 Suppressor Threads 5.1"OAL (Fits Glock G31 Gen1-4)

31 Match .357Sig with 9/16×32 Threads 5.1"OAL (Fits Glock 31 Gen1-4)

31 Match 40S&W 4.49"OAL (Fits Glock 31 Gen1-4)

Compensators

31 Match .357Sig Barrel with 9/16×32 Thread 4-Port Compensator (Fits Glock 31 Gen1-4)

Optic Plates

ACRO Rear Sight Adapter Plate for GLOCK

Fits GLOCK Rear Dovetail Adapter Holosun 407K / 507K / C&H EDC / EDC Enclosed / Olight Osight S STEEL

Red Dot Mount – MRA for Glock

Fits GLOCK Rear Dovetail Adapter Holosun 509T STEEL

Extended Magazine Releases

NDZ Glock Gen 1-3 Hybrid Magazine Release

NDZ Glock Gen 1-3 Magazine Release

About the GLOCK 31 Gen 3

Other versions of the Glock 31