10-8 Performance
GLOCK 20
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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 20
Mounting details
Glock Accessory Rail, Glock rear-sight dovetail (standard and Slimline slides)
Compatibility records
188
Sights
Lights & rail fitment
Barrels & comps
Barrels
12 listed- KKM Precision
20 Match 10MM 4.6"OAL (Fits Glock G20 Gen 1-4)
Source needs review - KKM Precision
20 Match 10MM 6.02"OAL (Fits Glock G20 Gen 1-4)
Source needs review - KKM Precision
20 Match 10MM with .578×28 Suppressor Threads 5.2" OAL (Fits Glock G20 Gen1-4)
Source needs review - KKM Precision
20 Match 10MM with 9/16×24 Suppressor Threads 5.2"OAL (Fits Glock G20 Gen 1-4)
Source needs review
Also on this pistol
Holsters
10 makers- ANR Designchecked 2026-07-30
- Alien Gear Holsterschecked 2026-11-01
- Blackhawkchecked 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.
Triggers & internals
Triggers
8 listed- Johnny Glocks
Factory OEM trigger shoe Upgrade (modified & enhanced)
Manufacturer documented - Ranger Proof
Long Ranger
Manufacturer documented - Tactical Triggers
Drop-in Trigger for Glock Pistols
Manufacturer documented - Johnny Glocks
JG VEX - CONVEX FACE TRIGGER SHOE
Manufacturer documented
Optics & footprint adapters
Optics
1 listedOptic Plates
6 listed- Aimpoint
ACRO Rear Sight Adapter Plate for GLOCK
Interface match - C&H Precision
Fits GLOCK Rear Dovetail Adapter Holosun 407K / 507K / C&H EDC / EDC Enclosed / Olight Osight S STEEL
Interface match - Outerimpact
Red Dot Mount – MRA for Glock
Interface match - C&H Precision
Fits GLOCK Rear Dovetail Adapter Holosun 509T STEEL
Interface match
Grip & magwells
Base Pads
2 listed- Pearce Grip
GLOCK GEN 4/5 : PG-1045ZRO
Manufacturer documented - TangoDown
Vickers Tactical .45ACP/10mm Glock Floor Plates VTMFP-002
Part no. VTMFP-002Manufacturer documented
Magazines
2 listed- ETS Group
ETS Glock 20 10mm 15-Round Magazine
Manufacturer documented - ETS Group
ETS Glock 20 10mm 30-Round Extended Magazine
Part no. GLK-20-30Manufacturer documented
Slides
Categories with no listings (8)
About the GLOCK 20
- Type
- Pistol
- Manufacturer
- GLOCK
- Model & version
- Glock 20
- Caliber
- 10mm
- Mounting details
- Glock Accessory Rail, Glock rear-sight dovetail (standard and Slimline slides)
- Width
- 1.34"
- Height
- 5.51"
- Weight
- 27.51 oz
- Slide width
- 1.12"
- Slide length
- 7.6"
- Barrel length
- 4.61"
- Overall length
- 8.07"
Other versions of the Glock 20
Compare versions and check the details for your exact model.
- GLOCK 20 Gen 2Lacks: Glock Accessory Rail.
- GLOCK 20 Gen 3Same recorded mounting details. Check each part for additional requirements.
- GLOCK 20 Gen 4Same recorded mounting details. Check each part for additional requirements.
- GLOCK 20 Gen 5 MOSAdds: Glock MOS. Lacks: Glock rear-sight dovetail (standard and Slimline slides).
- GLOCK 20 SFSame recorded mounting details. Check each part for additional requirements.
- GLOCK 20 V MOSAdds: Glock MOS. Lacks: Glock rear-sight dovetail (standard and Slimline slides).