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GLOCK 21 V MOS

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33 documented listings99 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 21 · V MOS
Mounting details
Glock Accessory Rail, Glock MOS
Compatibility records
132

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Categories with no listings (12)

About the GLOCK 21 V MOS

Manufacturer listing ↗ · Checked 2026-08-02

Type
Pistol
Manufacturer
GLOCK
Model & version
Glock 21 · V MOS
Caliber
.45 Auto
Mounting details
Glock Accessory Rail, Glock MOS
Width
1.38"
Height
5.51"
Weight
25.93 oz
Slide width
1.12"
Slide length
7.52"
Barrel length
4.61"
Overall length
8.07"

Other versions of the Glock 21

Compare versions and check the details for your exact model.

  • GLOCK 21Adds: Glock rear-sight dovetail (standard and Slimline slides). Lacks: Glock MOS.
  • GLOCK 21 Gen 2Adds: Glock rear-sight dovetail (standard and Slimline slides). Lacks: Glock Accessory Rail, Glock MOS.
  • GLOCK 21 Gen 3Adds: Glock rear-sight dovetail (standard and Slimline slides). Lacks: Glock MOS.
  • GLOCK 21 Gen 4Adds: Glock rear-sight dovetail (standard and Slimline slides). Lacks: Glock MOS.
  • GLOCK 21 Gen 5Adds: Glock rear-sight dovetail (standard and Slimline slides). Lacks: Glock MOS.
  • GLOCK 21 MOSSame recorded mounting details. Check each part for additional requirements.
  • GLOCK 21 SFAdds: Glock rear-sight dovetail (standard and Slimline slides). Lacks: Glock MOS.