Handgun comparison iconHandgun comparison icon

Glock G21 Gen4 vs Glock G20 Gen 5 MOS

Glock G21 Gen4 facing right

Glock G21 Gen4

Striker-Fired Full-Sized Pistol Chambered in 45 ACP
vs
Glock G20 Gen 5 MOS facing left

Glock G20 Gen 5 MOS

Striker-Fired Compact Pistol Chambered in 10mm Auto

Dimensions

 LengthLHeightHWidthWWeightW
G21 Gen48.07 in5.51 in1.34 in29.28 oz
G20 Gen 5 MOS8.07 in5.51 in1.38 in29.81 oz

Details

 BarrelBBL Trigger Website
G21 Gen44.61 in Striker-Fired us.glock.com
G20 Gen 5 MOS4.61 in Striker-Fired us.glock.com

Capacity

Side-by-Side
Side-by-Side Comparison Charts

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Tabletop
Tabletop Comparison

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Handguns
Glock G21 Gen4
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Glock G20 Gen 5 MOS
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G21 Gen4
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G20 Gen 5 MOS