Glock 20 Gen 4 for sale
(0)
Glock 20 Gen4 10mm 4.61" Barrel 15-Rounds USA Made
Brand:
Glock
Action:
Double Action
Barrel Length:
4.61in
Caliber:
10mm Auto
Capacity:
15+1
Finish Per Color:
Black
(20)
Glock 20 10mm Gen 4 Pistol u2012 PG2050203
Brand:
Glock
Action:
Pistol
Barrel Length:
4.61in
Caliber:
10mm Auto
Capacity:
15
Finish Per Color:
Black
(0)
Glock 20 Gen4 Fixed 10mm Acp 4.60" 10rd Black Sights
Brand:
Glock
Action:
Double Action
Barrel Length:
4.61"
Caliber:
10mm Auto
Capacity:
10
Rounds:
10
(9)
Glock 20 Gen4 AUS 10mm, 4.61" Barrel, Fixed Sights, Matte Black, 15rd
Brand:
Glock
Action:
Double Action
Barrel Length:
4.61in
Caliber:
10mm Auto
Capacity:
15
Finish Per Color:
Black
(13)
Glock 20 Gen 4 10 Round 10mm Pistol, Black - PG2050201
Brand:
Glock
Action:
SAFE ACTION
Barrel Length:
4.6
Caliber:
10mm Auto
Capacity:
10+1
Finish Per Color:
Black
(1)
GLOCK G20 GEN4 ATACS
Brand:
Glock
Action:
STRIKER
Barrel Length:
4.6 BARREL
Caliber:
10mm Auto
Capacity:
15
Finish Per Color:
Camo
(0)
Glock G20 Gen4 10mm, 4.61" Barrel, Operator Flag Cerakote, Safe Action Trigger, 15rd
Brand:
Glock
Action:
Double Action
Barrel Length:
4.61
Caliber:
10mm Auto
Capacity:
15+1
Finish Per Color:
American Flag
(0)
GLOCK G20 GEN 4 REBUILT
Brand:
Glock
Action:
Double Action
Barrel Length:
4.61in
Caliber:
10mm Auto
Capacity:
15
Finish Per Color:
Black
(0)
GLOCK G20 GEN 4
Brand:
Glock
Barrel Length:
4.6"
Caliber:
10mm Auto
Capacity:
15
Rounds:
15
(0)
Glock 20 Gen 4 10mm Pistol, Flat Dark Earth - PG20502FDE
Brand:
Glock
Action:
Semi-Auto
Barrel Length:
4.61
Caliber:
10mm Auto
Capacity:
15+1
Finish Per Color:
Flat Dark Earth
(0)
Glock PG2050204 G20 Gen4 10mm Auto 4.61" 15+1 Black/Coyote Battle Worn Flag Cerakote Black/Coyote Battle Worn Flag Rough Texture Interchangeable Backstraps Grip
Brand:
Glock
Action:
Double Action
Barrel Length:
4.61"
Caliber:
10mm Auto
Capacity:
15+1
Finish Per Color:
Battle Flag Cerakote / Black
(0)
GLOCK G20 GEN 4
Brand:
Glock
Action:
Pistol
Barrel Length:
4.6in
Caliber:
10mm Auto
Capacity:
15
(0)
Glock 20 Gen 4 10mm Pistol, Gray - PG2050203GF
Brand:
Glock
Action:
Semi-Auto
Barrel Length:
4.61in
Caliber:
10mm Auto
Capacity:
15
Finish Per Color:
Gray
(1)
Glock 20 Gen 4 10mm 15 Round Lipsey's Exclusive Pistol, Flat Dark Earth - PG2050203D
Brand:
Glock
Action:
Safe Action
Barrel Length:
4.61in
Caliber:
10mm Auto
Capacity:
15
Marketplace Insights
★ 5.0/5
based on 44 customer reviews across 14 variants from 22 retailers
Overwhelmingly praised as a reliable, powerful 10mm handgun ideal for woods/backcountry carry with excellent recoil management and strong customer service.
What customers like
Reliable & Durable32%
I have 100 percent faith of no failures in inclement weather!
Woods/Backcountry Carry27%
Great fun shooting sidearm, diffinately worth having one of these as your side arms, especially as a backcountry hiker/hunter.
Recoil Management16%
It's heavy enough where the recoil is manageable and easy to be accurate.
Easy Transaction Process14%
Thanks guys, you made the process exceptionally easy.
High Firepower11%
An excellent and reliable option for those who want some big firepower in a semi auto handgun
Common concerns
Factory Sights Quality5%
usual crappy plastic sights, with rear not even centered from factory.
Product Info Clarity2%
Wish PSA would have included how many mags came with it in the description(3)
Frequently Asked Questions
Glock 20 Gen 4 for sale
Is the Glock 20 Gen 4 a good gun?
Whether it's "good" depends on your needs. Gen 4 owners praise its reliability, accuracy, and 10mm power for predator defense and hunting. The improved grip helps manage recoil. Currently available new, typically around $580. Consider your intended use and comfort with 10mm recoil before deciding.
Is the Glock 20 Gen 4 discontinued?
Yes, Glock discontinued the Gen 4 Glock 20, with shipments stopping November 30, 2025. New and used inventory remains available through retailers, typically around $580. Glock has confirmed a new V Series to replace discontinued models, but no Gen 5 Glock 20 has been announced as a current production model.
What is the difference between Glock 20 Gen 4 and Gen 5?
The Glock 20 Gen 5 MOS does exist. Compared to the Gen 4, the Gen 5 removes finger grooves, updates the grip texture, is slightly wider (1.38 in vs 1.34 in), and is lighter (29.81 oz vs 30.69 oz). Gen 5 also adds MOS optics-cut capability. We have both on our marketplace.
What slide is compatible with Glock 20?
The Glock 20 Gen 1-3 slides are interchangeable within those generations. Gen 4 and Gen 5 require generation-specific slides. Aftermarket manufacturers like Lone Wolf and Maple Leaf produce compatible Glock 20/21 slides in various configurations. Always confirm generation compatibility before purchasing.
How much is a G20 Gen 4 worth?
A used Glock 20 Gen 4 typically sells between $200 and $489, depending on condition, finish, sights, and aftermarket modifications. Note that the Gen 4 is discontinued, which affects availability and pricing. Check our marketplace listings for current deals.
Can you put a red dot on a Glock 20 gen 4?
Yes. The Gen 4 Glock 20 MOS includes a factory optics cut, making red dot installation straightforward. Non-MOS Gen 4 models require dovetail mounting or slide milling. Either way, choose an optic rated for heavy recoil, such as the Trijicon RMR or Leupold DeltaPoint Micro, as 10mm generates significant force.
What mags can a Glock 20 take?
The Glock 20 uses 10mm, 15-round factory magazines. These same mags fit the Glock 40, which shares the same frame. Aftermarket options from Lone Wolf and others are available. Check generation compatibility before purchasing aftermarket magazines.
What is the best holster for a Glock 20?
Best choice depends on your carry method. For concealed carry, IWB or appendix Kydex holsters offer strong retention and trigger guard coverage. OWB holsters suit open carry or duty use. Prioritize a full-size frame fit, and consider light-compatible variants. Reputable makers include Safariland, Vedder, and Tier 1 Concealed.