Understanding the AR-15 Height Over Bore: A Comprehensive Guide
When it comes to the AR-15, one of the most crucial dimensions to consider is the height over bore. This measurement plays a significant role in the rifle’s performance, accuracy, and overall functionality. In this article, we will delve into the details of the AR-15 height over bore, exploring its importance, how it affects the rifle, and what you need to know to make an informed decision.
What is AR-15 Height Over Bore?
The AR-15 height over bore refers to the distance between the top of the receiver and the bottom of the barrel. This measurement is crucial because it determines the amount of space available for accessories, sights, and other components. The height over bore is typically measured in millimeters or inches and can vary depending on the specific model of the AR-15 rifle.
Why is AR-15 Height Over Bore Important?
Several factors make the AR-15 height over bore an essential consideration:
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Compatibility: The height over bore affects the compatibility of accessories and sights. A higher height over bore may limit the options for certain sights and accessories, while a lower height over bore may provide more flexibility.
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Accuracy: The distance between the sights and the bore can impact the rifle’s accuracy. A shorter height over bore can lead to better alignment and reduced parallax, resulting in improved accuracy.
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Functionality: The height over bore can affect the overall functionality of the rifle. A higher height over bore may make it more challenging to mount certain accessories, while a lower height over bore may provide a more streamlined design.
How Does AR-15 Height Over Bore Affect the Rifle?
The AR-15 height over bore can have several effects on the rifle:
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Sight Alignment: A shorter height over bore can lead to better sight alignment, as the sights are closer to the bore. This can reduce parallax and improve accuracy.
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Accessories: The height over bore determines the compatibility of accessories, such as optics, flashlights, and lasers. A higher height over bore may limit the options for certain accessories, while a lower height over bore may provide more flexibility.
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Functionality: The height over bore can affect the overall functionality of the rifle. A higher height over bore may make it more challenging to mount certain accessories, while a lower height over bore may provide a more streamlined design.
AR-15 Height Over Bore Specifications
Here is a table showcasing the height over bore specifications for some popular AR-15 models:
| Model | Height Over Bore (mm) |
|---|---|
| Colt M4 | 150 |
| Rock Island Armory M4 | 155 |
| Smith & Wesson M&P15-22 | 160 |
| Stag M4 | 165 |
Choosing the Right AR-15 Height Over Bore
When selecting an AR-15 rifle, it’s essential to consider your specific needs and preferences. Here are some factors to consider when choosing the right height over bore:
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Intended Use: If you plan to use your AR-15 for tactical or competitive shooting, a shorter height over bore may be preferable for better accuracy and sight alignment.
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Accessories: Consider the accessories you plan to use with your rifle. A higher height over bore may provide more options for mounting optics, flashlights, and lasers.
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Comfort: A lower height over bore may be more comfortable for some shooters, as it can reduce the overall length of the rifle and make it easier to handle.
Conclusion
The AR-15 height over bore is a critical dimension that can significantly impact the rifle’s performance, accuracy, and overall functionality. By understanding the importance of this measurement and considering your specific needs