What Size Round Does an AR-15 Shoot?
When it comes to the AR-15, one of the most popular firearms in the United States, many enthusiasts often wonder about the size of the round it shoots. The AR-15 is known for its versatility and adaptability, and its ammunition options are vast. In this article, we will delve into the different rounds that an AR-15 can fire, their sizes, and their intended uses.
Standard Caliber: 5.56x45mm NATO
The most common round fired by an AR-15 is the 5.56x45mm NATO. This round is a NATO standard and is widely used by military and law enforcement agencies around the world. The “5.56” refers to the diameter of the bullet, which is 5.56 millimeters, while the “45” refers to the length of the cartridge case, which is 45 millimeters. This round is known for its high velocity and excellent terminal ballistics, making it ideal for both combat and hunting applications.
Other Popular Rounds
While the 5.56x45mm NATO is the most common round for the AR-15, there are several other rounds that can be used, each with its own unique characteristics:
| Caliber | Length | Description |
|---|---|---|
| 7.62x39mm | 39mm | Used in the Soviet Union and other Eastern Bloc countries, this round offers increased stopping power and is often used for hunting larger game. |
| 6.8 SPC | 42mm | Developed for the U.S. military, the 6.8 SPC offers improved ballistics and terminal performance over the 5.56x45mm NATO, making it a popular choice for long-range shooting and hunting. |
| 300 Blackout | 30mm | Created for suppressed use, the 300 Blackout is a versatile round that can be used for hunting, tactical applications, and even home defense. |
Choosing the Right Round
Selecting the right round for your AR-15 depends on your intended use. Here are some factors to consider:
- Range: For long-range shooting, rounds like the 6.8 SPC and 7.62x39mm offer improved ballistics and accuracy.
- Stopping Power: If you’re using your AR-15 for self-defense or hunting larger game, rounds with increased stopping power, such as the 7.62x39mm, may be a better choice.
- Recoil: Heavier rounds, like the 7.62x39mm, can be more difficult to control, so consider your comfort level and the intended use of the firearm.
- Availability: Ensure that the round you choose is readily available and compatible with your firearm.
Conclusion
In conclusion, the AR-15 is a versatile firearm that can shoot a variety of rounds, each with its own unique characteristics. Whether you’re using it for hunting, self-defense, or tactical applications, it’s important to choose the right round for your needs. By considering factors such as range, stopping power, recoil, and availability, you can ensure that your AR-15 is equipped with the perfect ammunition for your specific requirements.
