Description
Technical Highlights in Plain Language
Overall length is 193 mm (7.60 in) with a 117 mm (4.61 in) barrel. Height reaches 139 mm (5.47 in), while slide width is a trim 32.5 mm.
Sight radius measures 172 mm on the G21 and 178 mm on the ported G21 C.
Right-hand octagonal rifling with a 400 mm twist stabilises heavy .45 ACP projectiles.
Unloaded weight runs about 745 g for the G21 and 735 g for the G21 C; an empty mag adds 88 g, and a full 13-round magazine adds roughly 340 g.
Trigger pull averages 2.5 kg (5.5 lb) with 12.5 mm of travel on both variants.
Operational Applications
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Law-Enforcement & Security Duty – Large-bore energy and 13-round capacity deliver trusted street performance in agencies worldwide.
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Personal & Home Defence – Full-size grip, controllable recoil (especially in the 21 C) and big-hole ballistics inspire confidence when it counts.
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Field & Back-Country Protection – Sub-sonic .45 ACP hits hard on hogs, predators or dangerous two-legged threats; polymer frame shrugs off mud and rain.
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Competition & Tactical Training – Consistent trigger, low bore axis and accessory rail support lights, dots or suppressor-height sights.
Big-Bore Confidence, Glock Simplicity
Choose the uncompromising Glock 21 for classic .45 ACP force or the recoil-taming Glock 21C for even faster recovery—either way, the 21 series combines heavyweight stopping power with the low-maintenance durability and global parts support that define Glock Perfection.
