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GLOCK 31 Gen 4

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171 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.

Check your exact model and part before ordering. Fitment limits

Model details
Manufacturer
GLOCK
Model & version
Glock 31 · Gen 4
Mounting details
Glock Accessory Rail, Glock rear-sight dovetail (standard and Slimline slides)
Compatibility records
238

Sights

Sights

103 listed
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Lights & rail fitment

Lights & Lasers

56 listed
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Triggers & internals

Triggers

45 listed
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Recoil Springs

5 listed
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Also on this pistol

Holsters

9 makers

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Holster makers (9)

Barrels & comps

Barrels

7 listed
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Compensators

1 listed
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Optics & footprint adapters

Optic Plates

6 listed
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Grip & magwells

Magwells

4 listed
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Extended Magazine Releases

2 listed
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Categories with no listings (8)

About the GLOCK 31 Gen 4

Manufacturer listing ↗ · Checked 2026-08-02

Type
Pistol
Manufacturer
GLOCK
Model & version
Glock 31 · Gen 4
Caliber
357 SIG
Mounting details
Glock Accessory Rail, Glock rear-sight dovetail (standard and Slimline slides)
Width
1.26"
Height
5.47"
Weight
23.28 oz
Slide width
1"
Slide length
7.32"
Barrel length
4.49"
Overall length
7.95"

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 3Same recorded mounting details. Check each part for additional requirements.