Description
The GLOCK 21 GEN4 is a full-size .45 ACP powerhouse, engineered for duty and defense. Featuring the Gen4 Modular Back Strap System (MBS) for a customizable grip and a rugged nDLC finish, it delivers legendary Glock reliability in a potent caliber. This handgun is the top choice for shooters who demand high-capacity performance and proven durability in a service pistol platform.
Key Features
- Compatibility: Uses standard .45 ACP ammunition and Gen4 accessories.
- Material: Polymer frame with a hardened steel slide.
- Finish: nDLC (Diamond-Like Carbon) finish for superior corrosion resistance.
- Operation: Safe Action® system with striker-fired, semi-automatic operation.
- Installation: Ready for duty out of the box; no installation required.
- Package Contents: GLOCK 21 Gen4 pistol, (2) 13-round magazines, speed loader, cleaning rod, brush, cable lock, and case.
- Ships From: United States — within 24 hours
Product Specifications
| Compatible Models | GLOCK 21 Gen4 specific parts and magazines. |
|---|---|
| Material | Polymer frame, steel slide. |
| Finish / Color | nDLC (black). |
| Operation Type | Semi-automatic, striker-fired. |
| Installation | Factory assembled, ready to use. |
| Package Contents | Pistol, 2 mags, loader, cleaning kit, lock, case. |
| Shipping | USA domestic — discreet packaging |
At Tactical Glock Co, we source our GLOCK pistols directly from authorized distributors, ensuring you receive a factory-fresh, unfired firearm with full OEM warranty. Our team, comprised of experienced shooters, personally vets each model for its intended role, confirming that the GLOCK 21 GEN4 meets the rigorous standards required for duty carry, home defense, and competitive shooting.
Frequently Asked Questions
What firearms is this compatible with?
This is the complete GLOCK 21 Gen4 pistol. It is compatible with all GLOCK 21 Gen4 magazines and most Gen4 accessories. Parts are not directly interchangeable with previous GLOCK 21 generations due to the dual recoil spring assembly.
Is installation difficult?
No installation is needed. The GLOCK 21 GEN4 ships fully assembled, tested, and ready for immediate use. Simply perform a basic field strip for cleaning and familiarization as outlined in the manual.
How long does delivery take?
Orders ship within 24 hours from our US facility in discreet, unmarked packaging with no logos or labels. Most domestic orders arrive within 3–5 business days via tracked shipping.
What is the Modular Back Strap System (MBS)?
The Gen4 MBS includes multiple back strap inserts (small, medium, large) that allow you to customize the grip circumference and feel to fit your hand perfectly, enhancing control and comfort.
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