Glock G21 Gen4 vs Glock G34 Gen4

Glock G21 Gen4 facing right

Glock G21 Gen4

Striker-Fired Full-Sized Pistol Chambered in 45 ACP
Glock G34 Gen4 facing left

Glock G34 Gen4

Striker-Fired Competition Pistol Chambered in 9mm Luger


  Length L Height H Width W Weight W
G21 Gen4 8.07 in 5.51 in 1.34 in 29.28 oz
G34 Gen4 8.74 in 5.47 in 1.3 in 25.93 oz


  Barrel BBL Trigger Website
G21 Gen4 4.61 in Striker-Fired
G34 Gen4 5.31 in Striker-Fired


  45 ACP 9mm Luger
G21 Gen4 13 (+1) -
G34 Gen4 - 17 , 19 , 24 , 31 , 33 (+1)

Side-by-Side Comparison Charts

How do these two handguns stack up against eachother?

Tabletop Comparison

Drag/drop and reorder the handguns to compare on top of eachother