Handgun comparison iconHandgun comparison icon

Glock G17 Gen4vsGlock G21 Gen4

Glock G17 Gen4 facing right

GlockG17 Gen4

Striker-Fired Full-Sized Pistol Chambered in 9mm Luger
vs
Glock G21 Gen4 facing left

GlockG21 Gen4

Striker-Fired Full-Sized Pistol Chambered in 45 ACP