The full-size .45 ACP platform remains a preferred choice for shooters who prioritize proven stopping power and reliable function. When evaluating duty-ready pistols, manufacturing provenance, ergonomics, and mechanical condition matter as much as basic specifications.
GLOCK G21 GEN 4 is a USA-manufactured example with clear “MADE IN USA GLOCK, INC., SMYRNA, GA.” frame markings, a slide marked “GLOCK 21 Gen4 USA 45 Auto,” and a barrel hood stamped “.45 Auto” with the Glock logo. This very good condition pistol ships with one (1) Glock OEM 13-round .45 Auto magazine and features a matte black slide, rear serrations, and fixed white-dot front / white-outline U-notch rear sights. Shop this product
Performance & reliability
The G21 Gen4 uses Glock’s Safe Action striker-fired system and a 4.61-inch steel barrel with polygonal rifling and a 1:15.75 RH twist. Polygonal rifling produces a clean bore finish and excellent rifling definition—both are noted as being in excellent condition on this example—contributing to consistent accuracy and simplified maintenance. Capacity is 13+1 with the included OEM magazine, providing a balance of .45 ACP ballistics and meaningful on-board rounds.
Ergonomics & controls
Gen4 enhancements on this G21 include the RTF grip texture with finger grooves and an enlarged, reversible magazine release. These features make the pistol adaptable for a range of hand sizes and reload techniques. The polymer frame integrates the Glock Universal accessory rail with one cross slot for lights or lasers. Two cross pins above the trigger indicate standard Glock internal modularity for maintenance.
Why .45 ACP?
.45 Auto remains respected for its controllable recoil impulse and terminal performance at typical defensive distances. This G21 Gen4 delivers that caliber in a full-size package well suited to duty, home defense, or a range-focused service pistol. Price for this USA-made example is listed at $512.99—view product details and pricing directly via the product page.
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This GLOCK G21 GEN 4 offers documented USA manufacture, Gen4 ergonomics, a clean bore with sharp polygonal rifling, and an included 13-round OEM magazine—factors that make it a practical choice for shooters seeking a battle-tested .45 ACP platform. Check current availability
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People Also Ask
What makes this product stand out from competitors?
This product offers superior quality and innovative features that set it apart in the market. Its design focuses on both performance and reliability, making it a top choice for professionals and enthusiasts alike.
Is this product suitable for beginners?
Yes, this product is designed with user-friendly features that make it accessible to beginners while still offering advanced capabilities for experienced users.
What warranty or support is available?
The product comes with comprehensive warranty coverage and excellent customer support to ensure your satisfaction and peace of mind.
How does this compare to similar products in its price range?
This product offers exceptional value for its price point, providing features and quality that typically cost significantly more in comparable alternatives.
What maintenance is required?
Minimal maintenance is required thanks to the product’s durable construction and quality materials. Regular cleaning and occasional inspections will keep it performing optimally.
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