GLOCK UR21501 G21 G4 45 US 13R REBUILT

Elevate Your Readiness: The GLOCK G21 Gen4 .45 ACP Pistol

For those who demand uncompromising power, legendary reliability, and superior ergonomics in a full-size pistol, the GLOCK G21 Gen4 chambered in .45 ACP stands as a formidable choice. Engineered to meet the rigorous demands of law enforcement, military personnel, and discerning civilians alike, this pistol represents the pinnacle of GLOCK's "Safe Action" design, delivering potent performance in a highly controllable package. Whether you are seeking a primary self-defense handgun, a robust duty weapon, or a precise tool for range and sport shooting, the G21 Gen4 offers an exceptional blend of features and the proven dependability that has made GLOCK a global leader.

Why Choose the GLOCK G21 Gen4 for Your Needs?

Many individuals ask, "What is the best .45 ACP pistol for self-defense?" or "Which handgun offers the ultimate balance of power and reliability?" The answer frequently points to the GLOCK G21 Gen4. Its design addresses critical concerns for shooters, offering solutions to common challenges faced in high-stress situations or during extended range sessions.

• Unparalleled Reliability and Durability: GLOCK pistols are world-renowned for their ability to function flawlessly under extreme conditions. The G21 Gen4 continues this legacy, boasting a robust polymer frame and a hardened steel slide that resist corrosion, wear, and impact. This enduring construction ensures the pistol performs consistently, shot after shot, year after year, minimizing the risk of malfunctions when it matters most. It’s a firearm you can truly trust with your life.
• Potent .45 ACP Caliber: The .45 Automatic Colt Pistol (ACP) cartridge has a storied history as a proven man-stopper, favored for its significant stopping power and energy transfer. The G21 Gen4 harnesses this formidable cartridge with remarkable efficiency, delivering authoritative performance that inspires confidence for personal protection, home defense, and even hog hunting in certain configurations. Its ability to manage the .45 ACP's recoil effectively makes it a more comfortable and accurate shooting experience than many might expect from such a powerful round.
• Enhanced Ergonomics and Adaptability (Gen4 Advancements): The "Gen4" designation signifies crucial enhancements that improve the pistol's adaptability and user comfort. The modular backstrap system allows shooters to customize the grip size to fit their individual hand shape, whether small, medium, or large, ensuring a more natural point of aim and superior control. This feature is invaluable for ensuring proper grip, which directly translates to improved accuracy and recoil management, especially beneficial for those asking, "How can I make my large-caliber pistol more comfortable to shoot?"
• Intuitive and Consistent Operation: The GLOCK Safe Action System provides a consistent trigger pull from the first shot to the last, without external safeties to manipulate. This simplicity of operation is a critical safety feature, promoting quick and reliable deployment under stress while minimizing potential for user error. This focus on intuitive functionality makes it an excellent choice for new gun owners seeking reliability without complexity, as well as experienced shooters who value consistency.
• High Capacity for its Caliber: While many .45 ACP pistols offer limited capacity, the GLOCK G21 Gen4 provides a substantial 13+1 round capacity, giving you ample firepower for self-defense scenarios or extended periods on the range without frequent reloads. This generous capacity is a significant advantage for those prioritizing defensive readiness.

Key Features of the GLOCK G21 Gen4

The GLOCK G21 Gen4 is not just a .45 ACP pistol; it's a meticulously engineered system designed for optimal performance. Its features are carefully integrated to enhance the shooter's experience and ensure unwavering reliability.

• Modular Backstrap System: As a cornerstone of the Gen4 improvements, this system includes three interchangeable backstraps (small, medium, large) plus the standard frame, allowing users to quickly and easily customize the grip circumference. This level of personalization significantly enhances comfort, control, and overall shootability for a wider range of hand sizes, addressing the common need for a pistol that "fits just right."
• RTF3 Frame Texture (Rough Textured Frame 3): The frame features a distinct, aggressive texture on all four grip surfaces. This pattern provides a secure and non-slip hold even in adverse conditions such as rain, sweat, or gloved hands, improving weapon retention and recoil control. This thoughtful design element ensures confidence in your grip, a vital factor for accurate and rapid follow-up shots.
• Dual Recoil Spring Assembly: The Gen4 G21 incorporates a dual recoil spring assembly, significantly reducing felt recoil and increasing the pistol's service life. This innovative system dampens the intense energy of the .45 ACP cartridge, making follow-up shots faster and more accurate, and reducing shooter fatigue during prolonged training sessions. This improvement is particularly noticeable for those who find the .45 ACP challenging to control in other platforms.
• Enlarged Reversible Magazine Catch: The magazine catch has been enlarged and is reversible, allowing both right- and left-handed shooters to effortlessly and ergonomically release the magazine. This ambidextrous capability enhances the pistol's versatility and user-friendliness, ensuring seamless operation for all users.
• GLOCK Safe Action System: This fundamental GLOCK safety system consists of three independent mechanical safeties that automatically disengage as the trigger is pulled and automatically re-engage when the trigger is released. This design provides a safe, consistent trigger pull and eliminates the need for external safeties, promoting readiness without compromise.
• Match-Grade GLOCK Marksman Barrel (GMB): While standard GLOCK barrels are known for their accuracy, many modern GLOCKs, including the Gen4, benefit from continuous improvements. The precision-machined barrel ensures excellent inherent accuracy, making the G21 Gen4 highly capable for competitive shooting and precise target engagement.
• Capacity and Magazines: The GLOCK G21 Gen4 typically comes standard with 13-round magazines, offering a substantial capacity for a .45 ACP firearm. These magazines are constructed from durable polymer and steel, engineered for reliable feeding and long-term use.
• Robust Construction Materials: Beyond the durable polymer frame, the slide is meticulously machined from solid steel and treated with GLOCK's proprietary Tenifer or nDLC finish (depending on manufacturing date), providing extreme hardness and corrosion resistance that exceeds conventional surface treatments. This ensures the pistol can withstand harsh environments and rigorous use.

Who is the GLOCK G21 Gen4 For?

The GLOCK G21 Gen4 is a versatile full-size handgun that serves a broad spectrum of users due to its power, capacity, and reliability.

• Self-Defense and Home Protection: For individuals prioritizing maximum stopping power and proven reliability for personal and home defense, the G21 Gen4 is an outstanding choice. Its substantial capacity and the authoritative .45 ACP cartridge provide peace of mind in defensive scenarios. The ease of use of the Safe Action System makes it a straightforward choice for emergency situations.
• Law Enforcement and Security Professionals: Historically, the .45 ACP has been a preferred caliber for many law enforcement agencies, and the G21 Gen4 is well-suited for duty carry. Its ruggedness, high capacity, and consistent performance meet the demanding requirements of professional use, making it a trusted sidearm for officers and security personnel worldwide.
• Sport Shooting and Competition: While a full-size .45 ACP, the G21 Gen4's reduced felt recoil (thanks to the dual recoil spring) and inherent accuracy make it a capable platform for various shooting sports. Its reliability means fewer stoppages during critical moments in competition, and its customizable grip allows for optimal ergonomics to enhance performance.
• Firearms Enthusiasts and Collectors: For those who appreciate powerful and historically significant calibers, the .45 ACP GLOCK G21 Gen4 offers an appealing addition to any collection. Its status as a widely adopted, modern classic ensures its place in the pantheon of iconic firearms.

Understanding the "REBUILT" Designation for GLOCK UR21501 G21 G4 45 US 13R REBUILT

The "REBUILT" designation within the product identification GLOCK UR21501 G21 G4 45 US 13R REBUILT signifies a specific type of GLOCK G21 Gen4 offering. While the "13R" clearly indicates its standard 13-round capacity in .45 ACP, the "REBUILT" aspect typically points to a product that has undergone a factory-certified refurbishment process or is configured to meet specific market regulations while maintaining the original factory specifications and reliability.

This means that while it retains all the legendary features and performance of a standard G21 Gen4, it may have been assembled from new and factory-inspected parts, or has gone through a rigorous inspection and recertification process by GLOCK to ensure it meets the same stringent quality and safety standards as a new firearm. For the consumer, this translates to a fully functional, reliable, and authentic GLOCK G21 Gen4, often making it an excellent value proposition without compromising on the brand's renowned quality and durability. It provides confidence that the pistol has been vetted and approved by GLOCK itself, ensuring its fitness for any application from defensive use to recreational shooting.

Maintaining Your GLOCK G21 Gen4

Maintaining a GLOCK G21 Gen4 is notably straightforward, contributing to its reputation as a user-friendly and reliable firearm. Regular cleaning and lubrication are key to ensuring its longevity and consistent performance.

• Field Stripping: The GLOCK G21 Gen4 disassembles into four main components (slide, barrel, recoil spring assembly, frame) quickly and easily, without the need for special tools. This simple field strip process facilitates thorough cleaning.
• Cleaning: Use a quality gun cleaner to remove carbon buildup from the bore, chamber, and breech face. Clean the slide rails and the interior of the frame to remove any grit or residue. A nylon brush is effective for stubborn areas.
• Lubrication: Apply a thin layer of gun oil to the slide rails (four points), the barrel hood, and the locking block. Avoid over-lubricating, as excessive oil can attract debris.
• Inspection: Periodically inspect the recoil spring assembly, firing pin channel, and extractor for wear or damage. Replace parts as needed, ideally with genuine GLOCK components to maintain factory specifications.

Following these simple maintenance steps will ensure your GLOCK G21 Gen4 remains in peak operating condition for many years and thousands of rounds.

Why Purchase Your GLOCK G21 Gen4 from DEGuns?

When considering a significant firearm purchase like the GLOCK G21 Gen4, choosing a reputable dealer is paramount. DEGuns stands out as a premier destination, offering not only competitive pricing but also a commitment to customer service and expert knowledge.

At DEGuns, you can expect:

• Extensive Selection: A comprehensive inventory of firearms, accessories, and ammunition, ensuring you find exactly what you need.
• Expert Guidance: Knowledgeable staff ready to assist you with any questions, from product specifications to legal requirements, ensuring you make an informed decision.
• Secure and Convenient Shopping: A streamlined online and in-store purchasing experience, with secure transactions and efficient shipping or pickup options.
• Trusted Reputation: A long-standing commitment to customer satisfaction and adherence to all legal and ethical standards in the firearms industry.

Investing in a GLOCK G21 Gen4 from DEGuns means you’re not just buying a pistol; you’re acquiring a commitment to quality, performance, and peace of mind, backed by a trusted source.

Specifications: GLOCK UR21501 G21 G4 45 US 13R REBUILT

Frequently Asked Questions about the GLOCK G21 Gen4

Q: Is the GLOCK G21 Gen4 suitable for concealed carry?
A: Due to its full-size dimensions and a barrel length of approximately 4.61 inches, the GLOCK G21 Gen4 is generally considered large for concealed carry, especially for individuals with smaller frames. However, with appropriate holsters and clothing, it is possible for some. It excels as a duty pistol, home defense firearm, or open-carry sidearm.

Q: What is the effective range of the GLOCK G21 Gen4?
A: While handgun effective ranges vary greatly depending on the shooter, the GLOCK G21 Gen4, with its robust design and accurate barrel, is highly effective at typical handgun defensive ranges of up to 25 yards. With practice, many shooters can achieve excellent accuracy at longer distances.

Q: Are GLOCK G21 magazines interchangeable between generations?
A: Standard GLOCK G21 magazines (13-round) are generally compatible across Gen3 and Gen4 G21 models. However, if you reverse the magazine catch on a Gen4 for left-handed use, you must use Gen4-specific magazines or newer ones with cuts on both sides, as older Gen3 magazines only have a cut on one side.

Q: How does the .45 ACP recoil compare in the G21 Gen4 to other .45s?
A: The GLOCK G21 Gen4 is praised for its ability to manage the .45 ACP's recoil effectively. Thanks to its polymer frame's flex and the Gen4's dual recoil spring assembly, felt recoil is often described as a push rather than a sharp snap, making it more comfortable to shoot compared to some all-steel .45 ACP pistols.

Q: What does "REBUILT" mean for a GLOCK pistol?
A: For the GLOCK UR21501 G21 G4 45 US 13R REBUILT, "REBUILT" typically denotes a product that has undergone a factory-certified reconditioning process or is a specific designation for units assembled to meet particular market or compliance standards. This ensures the pistol meets GLOCK's stringent quality, safety, and performance criteria, offering the same reliability and durability as a new firearm. It is a genuine GLOCK product with factory assurance.