To many Americans, there is only one caliber for a personal defense handgun and that's the .45 auto. Glock® acknowledged that sentiment with the development of the Glock® 21. Remarkable for its accuracy and light recoil, the Glock® 21 Gen4 delivers the legendary stopping power of the .45 Auto round with 10 or 13 round magazine capacity. The modular backstrap design lets the user adapt the grip to hand size, and the frame surface exhibits the scientifically-designed Gen4 rough textured technology. This model features a dual-recoil spring assembly that substantially increases the life of the system, and the enlarged reversible magazine catch easily accommodates left- or right-handed operators. The Generation 4 frame retains the Glock accessory rail for accessory attachment. The Gen4 system is the perfect complement to this iconic .45 caliber cartridge
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