The length of an AR-15 rifle isn't a single, definitive answer. Its overall length is highly variable, depending on several factors, primarily the barrel length and the addition of accessories. Understanding these factors is crucial for anyone considering owning or learning about AR-15s.
Key Factors Determining AR-15 Length
Several components significantly influence the overall length of an AR-15:
1. Barrel Length: The Core Factor
The barrel is the most significant determinant of an AR-15's length. Common barrel lengths range from 7.5 inches to 20 inches, and even longer barrels are available for specialized applications. Shorter barrels result in a more compact and maneuverable rifle, while longer barrels generally offer increased accuracy and velocity.
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Short-barreled rifles (SBRs): These typically have barrels under 16 inches and require specific legal considerations in many jurisdictions. Regulations vary significantly by location, so it's crucial to check local and federal laws before owning an SBR.
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Standard barrels: Barrels between 16 and 20 inches are common in standard AR-15 configurations, offering a balance between maneuverability and performance.
2. Stock Type and Extension: Adjusting the Rear
The stock significantly affects the overall length. AR-15s utilize adjustable stocks that can be collapsed or extended to suit the shooter's preference and body type. The length of the stock can vary from completely collapsed to fully extended, resulting in a considerable difference in overall rifle length.
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Fixed stocks: Some AR-15s have fixed stocks, providing a consistent and unchanging length.
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Telescoping stocks: These are the most common type, allowing for easy adjustment to fit different shooters.
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Adjustable stocks with buffer tubes: The length of the buffer tube also adds to the overall length, affecting the total length when the stock is extended.
3. Accessories: Adding to the Equation
Various accessories can add to the overall length. These include:
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Handguards: The handguard covers the barrel and adds to the overall length, particularly with longer handguards.
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Optics: Mounting scopes or red dot sights adds to the length, depending on the size and mount used.
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Vertical grips: While not dramatically impacting the length, vertical grips do slightly increase the overall dimension.
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Flash hiders and muzzle brakes: These muzzle devices can also add a small amount of length to the front end of the rifle.
Typical Length Ranges:
Considering all the factors above, here's a general idea of the length range you might encounter:
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Shortest (SBR with collapsed stock): Around 26 inches.
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Average (Standard barrel with mid-length stock): Around 36 inches.
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Longest (Long barrel with extended stock): Around 42 inches or more.
Remember that these are estimates. The actual length of a specific AR-15 rifle will depend on the exact configuration of parts used.
Understanding Legal Implications:
It's crucial to emphasize the importance of understanding and complying with all local, state, and federal laws regarding firearm ownership and modifications. Regulations concerning barrel length, stock modifications, and other aspects of AR-15 ownership vary significantly. Always consult with relevant authorities and legal professionals to ensure your actions are within the bounds of the law.
This guide provides a comprehensive overview of the factors impacting AR-15 rifle length. Understanding these factors empowers responsible gun ownership and aids in making informed decisions about purchasing and customizing this popular firearm platform.
