The Glock G21 Gen 4 .45 ACP - Ultimate Full-Size Defense & Sport Pistol is a .45 ACP full size handguns from Glock. It is available from 1 vendor at $599.
Name: Glock G21 Gen 4 .45 ACP - Ultimate Full-Size Defense & Sport Pistol
Brand: Glock
Category: Full Size Handguns
Caliber: .45 ACP
Barrel Length: 4.6"
Capacity: 13 rounds
UPC: 764503000645
SKU: UCDSUKgAn
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The Glock G21 Gen 4 in Flat Dark Earth Cerakote is a full-sized .45 ACP pistol with a 13-round capacity and three included magazines. The frame is polymer with an FDE Cerakote finish; the slide is forged steel with a black finish. Barrel is 4.6 inche...
The Glock G21 Gen 4 in Flat Dark Earth Cerakote is a full-sized .45 ACP pistol with a 13-round capacity and three included magazines. The frame is polymer with an FDE Cerakote finish; the slide is forged steel with a black finish. Barrel is 4.6 inches, overall length is 8.03 inches, weight is 1.83 lbs (29.3 oz). The Safe Action system runs a double-action trigger with integrated trigger, firing pin, and drop safeties. Fixed 1-dot front and 2-dot rear sights.
The FDE frame against a black slide gives this variant a two-tone look that differs from the standard all-black or OD configurations. Three magazines in the box is a practical inclusion. The Gen 4 interchangeable backstraps let shooters adjust grip thickness for different hand sizes, addressing a long-standing complaint about one-size-fits-all Glock grips. The textured FDE polymer grips well across dry and wet conditions. Fixed sights are serviceable out of the box, and the aftermarket has a wide selection of drop-in upgrades.
The .45 ACP chambering makes this a natural choice for home defense where stopping power matters. The full-size frame handles recoil well enough for extended range sessions. Concealed carry is possible depending on body type and holster, though the full-size dimensions push most people toward OWB duty carry.
The G21 Gen 4 draws consistent praise for reliability. Owners report extended round counts with no malfunctions, which is the deciding factor for anyone buying it for defense or duty. The 13-round capacity is a consistent positive compared to other .45 ACP pistols that top out lower.
The Gen 4 backstraps get specific credit in feedback. Shooters who felt the Gen 3 was too thick in the grip now find a better fit, and this shows up in accuracy reports: more comfortable grip, more consistent shot placement.
Size and weight are the main complaints. At 1.83 lbs and 8.03 inches long, it's on the heavier end of the carry spectrum, and shooters who want an everyday carry gun often end up preferring a G30 or similar compact. The .45 ACP recoil is manageable for most, but new shooters coming from 9mm sometimes need time to adjust.
The factory trigger gets mixed reviews, predictable and consistent to most, but some find the pull weight heavier than competing designs. Easy to address with aftermarket parts. The aesthetic is utilitarian, which is either a feature or a drawback depending on the owner. The platform's aftermarket depth (holsters, sights, grips, triggers) is frequently cited as a reason to choose Glock over less-supported brands.
AI-generated insights derived from customer reviews and discussions on popular gun-enthusiast forums.
The Glock G21 Gen 4 in Flat Dark Earth Cerakote is a full-sized .45 ACP pistol with a 13-round capacity and three included magazines. The frame is polymer with an FDE Cerakote finish; the slide is forged steel with a black finish. Barrel is 4.6 inches, overall length is 8.03 inches, weight is 1.83 lbs (29.3 oz). The Safe Action system runs a double-action trigger with integrated trigger, firing pin, and drop safeties. Fixed 1-dot front and 2-dot rear sights.
The FDE frame against a black slide gives this variant a two-tone look that differs from the standard all-black or OD configurations. Three magazines in the box is a practical inclusion. The Gen 4 interchangeable backstraps let shooters adjust grip thickness for different hand sizes, addressing a long-standing complaint about one-size-fits-all Glock grips. The textured FDE polymer grips well across dry and wet conditions. Fixed sights are serviceable out of the box, and the aftermarket has a wide selection of drop-in upgrades.
The .45 ACP chambering makes this a natural choice for home defense where stopping power matters. The full-size frame handles recoil well enough for extended range sessions. Concealed carry is possible depending on body type and holster, though the full-size dimensions push most people toward OWB duty carry.
| Caliber | .45 ACP |
| Model | G21 |
| Capacity | 13 rounds |
| Barrel length | 4.6" |
| Overall length | 8.03" |
| Weight | 29.3 oz |
| Action | Double Action |
| Finish | Black |
| Color | Flat Dark Earth Cerakote Frame, Black Slide |
| Sights | RS: Fixed 2-Dot, FS: Fixed 1-Dot |
| Safety | Trigger/Firing Pin/Drop |
AI-generated insights derived from customer reviews and discussions on popular gun-enthusiast forums.
The G21 Gen 4 draws consistent praise for reliability. Owners report extended round counts with no malfunctions, which is the deciding factor for anyone buying it for defense or duty. The 13-round capacity is a consistent positive compared to other .45 ACP pistols that top out lower.
The Gen 4 backstraps get specific credit in feedback. Shooters who felt the Gen 3 was too thick in the grip now find a better fit, and this shows up in accuracy reports: more comfortable grip, more consistent shot placement.
Size and weight are the main complaints. At 1.83 lbs and 8.03 inches long, it's on the heavier end of the carry spectrum, and shooters who want an everyday carry gun often end up preferring a G30 or similar compact. The .45 ACP recoil is manageable for most, but new shooters coming from 9mm sometimes need time to adjust.
The factory trigger gets mixed reviews, predictable and consistent to most, but some find the pull weight heavier than competing designs. Easy to address with aftermarket parts. The aesthetic is utilitarian, which is either a feature or a drawback depending on the owner. The platform's aftermarket depth (holsters, sights, grips, triggers) is frequently cited as a reason to choose Glock over less-supported brands.
Price Range: $599 - $599
| Vendor | Price | Condition | Link |
|---|---|---|---|
| Gunbuyer Com | $599 | New | Buy Now |
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