Home / Firearms / Glock / Glock 21 Gen4 .45 ACP 4.61 Barrel 13-Rounds
27% below avg
Glock 21 Gen4 .45 ACP 4.61 Barrel 13-Rounds
Matte black finish
Modular back strap system
Reversible magazine catch
Safe Action Trigger System

Specifications

Caliber
Brand
MPN
G21413US
UPC
764503913211

Description

Glock 21 Gen4 Features The Glock 21 is remarkable for its accuracy and light recoil. It features Glock s Safe Action system which provides a consistent trigger pull from the first to the last round. The three automatic independently operating mechanical safeties are built into the fire control system of the pistol. All three safeties disengage sequentially as the trigger is pulled and automatically reengage when the trigger is released. The frame is made of polymer with hardened steel guides. It features an ideal grip angle and low weight. The slide stop lever and the magazine catch are easily operated with the shooting hand. The advanced surface treatment of the slide results in optimal hardness by considerably reducing wear and tear and it makes it corrosion resistant even when operating in saltwater conditions. The matte surface minimizes light reflection. The barrel is mechanically locked and cold-hammer forged. It also has the same advanced surface treatment as the slide. Its extractor serves as a loaded chamber indicator to comply with the laws of certain states and its position may visually and physically indicate whether there is a cartridge in the chamber of the pistol. Remarkable for its accuracy and light recoil the GLOCK 21 Gen4 delivers the power of the 45 Auto round with high magazine capacity. The Modular Back Strap system makes it possible to instantly customize its grip to accommodate any hand size. The reversible magazine catch makes it ideal for left and right-handed shooters The Gen4 system is the perfect complement to the 45 Auto caliber cartridge. Glock 21 Gen4 Specifications Brand: Glock Model: G21 Gen4 Category: Pistols Caliber: 45 ACP Capacity: 13+1 Action: DAO Frame Finish: Black OAL: 8.07 Frame Material: Polymer Hand: Right Sight Style: Fixed Slide Finish: Matte Black Slide Material: Steel Slide Description: Serrated Matte Black Steel Gun Platform: Glock Component Compatible Style Magazine Type: OEM Grips: Finger Grooved Black Rough Texture Interchangeable Backstrap Sight Configuration: Fixed Includes: Mag Loader / 2 Mags / Cleaning Set / Pistol Case / Backstrap Set / Cable Lock Safety: Trigger Firing Pin Drop Barrel Description: 4.61 Cold Hammer Forged Weight: 38.80 oz Frame Description: Black Polymer with Picatinny Rail

Glock 21 Gen4 .45 ACP 4.61 Barrel 13-Rounds Price History and Deals

ARMSAGORA tracked 31 days of price history for Glock 21 Gen4 .45 ACP 4.61 Barrel 13-Rounds. The lowest tracked price in this period was $399, with prices ranging up to $504 from Apr 23, 2026 through May 23, 2026.

Current price is at the tracked 30-day low
Current Low
$399
30-Day Low
$399
Average
$451.5
Median
$451.5
Retailers
2
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