Remarkable for its accuracy and light recoil, the Glock 21 Gen 4 delivers the legendary stopping power of the 45 ACP round with a higher magazine capacity. The modular back strap design on the G21 Gen 4 lets you instantly customize the grip to adapt to an individual shooter's hand size. Its frame employs the scientifically designed, real-world-tested, Gen 4 rough textured technology. Internally, the Glock dual recoil spring assembly substantially increases the life of the system. A reversible enlarged magazine catch, changeable in seconds, accommodates left or right-handed operators.
| Action | safe action |
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| Barrel | 4.6 |
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| Length | 7.59 |
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| Caliber | 45 ACP |
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| Capacity | 13 + 1 |
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| Magazine | 3 13 rd. |
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| Stock Frame Grips | Black Polymer Frame |
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| Additional Feature 1 | No Fired Shell Case |
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Determined at checkout.
