June, 24

Maximising Accuracy and Performance with a 20-Inch AR-15 Barrel: A Comprehensive Guide

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When it comes to AR-15 rifles, the barrel is one of the most important parts. It can greatly affect accuracy, range and overall performance of the rifle. The 20 inch AR-15 barrel has become increasingly popular among gun enthusiasts as it offers several benefits over other barrel lengths.

A longer barrel length allows for better accuracy due to increased bullet stabilization and a longer sight radius. Additionally, a 20 inch barrel can provide increased muzzle velocity which results in greater range and stopping power. These advantages make the 20 inch AR-15 barrel an ideal choice for long distance shooting or hunting.

If you're considering upgrading your AR-15 rifle or building one from scratch, you might want to consider a 20 inch AR-15 Barrel. In this article we'll explore everything you need to know about this type of rifle modification so that you can make an informed decision on whether it's right for your needs – read on!

20 Inch AR-15 Barrel: The Key to Accurate Shooting

The 20 inch AR-15 barrel is a popular choice for gun enthusiasts who are looking for an accurate and reliable shooting experience. A longer barrel means that the bullet has more time to build up speed and energy before leaving the muzzle, resulting in greater accuracy and range. In this article, we will explore the benefits of using a 20 inch AR-15 barrel, compare it with other lengths, and provide tips on how to choose one.

Benefits of Using a 20 Inch AR-15 Barrel

Greater Accuracy

One of the main advantages of using a 20 inch AR-15 barrel is its ability to improve accuracy. The longer length allows for better stabilization of bullets as they travel through the air. This results in tighter groups at further distances than with shorter barrels.

Longer Range

Another benefit of having a longer ar 15 rifle barrel is increased range. With more velocity behind each bullet fired from your rifle or pistol you can shoot farther away targets accurately without needing any additional equipment like scopes or red dot sights.

Improved Muzzle Velocity

A long-barreled gun also generates higher muzzle velocities which equate into flatter trajectories making shots easier even at long ranges where wind drift could have been an issue otherwise.

Comparison with Other Lengths

While there are many different lengths available for barrels on an ar platform rifle or pistol ,the most common ones are usually between sixteen inches (16") – twenty four inches (24"). Each length has its own strengths depending on what kind off application you intend it for:

  • 10-inch barrell: Shorter barrels provide increased mobility which can be beneficial when moving around corners quickly but sacrifice precision over distance.
  • 16-inch barrell: Sixteen-inch barrels tend to strike good balance between mobility and precision but lack some range compared to their bigger brothers.
  • 20-inch barrell: The 20 inch ar 15 barrel provides the best accuracy and range.
  • 24-inch barrell: The longest barrels have improved precision but can be cumbersome to use in close quarters.

Tips for Choosing a 20 Inch AR-15 Barrel

When selecting a barrel of this length, it is important to consider factors such as material, rifling type and twist rate. Material wise you should always go for stainless steel or chromoly vanadium steel since they offer the best combination of durability, corrosion resistance and weight. Rifling types include button-rifled or cut-rifled that impact how well your projectiles will fly downrange depending on their intended purpose (match shooting versus hunting). Furthermore twist rates usually vary between one:7" – one:12" with slower twists being more suitable for heavier bullets while faster ones suit lighter ones better.


In conclusion, if you are looking for an accurate shot at long ranges then choosing a 20 inch AR-15 barrel is your best bet. It provides greater stability, longer range and higher muzzle velocities which makes it easier to hit targets even when shooting from further away. When choosing your perfect rifle/pistol always keep in mind what kind off application you intend it use it for so that way all factors like size ,weight ,reach etc work together perfectly!


What is a 20 inch AR-15 barrel and why should I consider using it?

A 20 inch AR-15 barrel is a type of rifle barrel that measures twenty inches in length and is designed to fit the AR-15 platform. It's often used by military personnel, law enforcement officers, hunters, and competitive shooters because it offers several advantages over shorter barrels.

One of the biggest benefits of using a 20 inch AR-15 barrel is its accuracy. The longer length provides better stability for the bullet as it travels through the air, which results in less deviation from your intended target. Additionally, because you have more space for rifling inside a longer barrel, you can increase bullet spin rate which will also improve accuracy.

Another advantage to consider when using this type of rifle configuration is its increased muzzle velocity compared to shorter barrels. Muzzle velocity simply refers to how fast your projectile exits the firearm at point blank range (measured in feet per second). A longer barreled gun can provide higher velocities as there's more time during combustion for accelerating gases that propel bullets forward.

If you're looking for improved performance at long-range shooting scenarios beyond typical self-defense distances (~50 meters), then choosing an appropriate barreled upper receiver with adequate caliber selection (i.e .223 Remington/5.56x45mm NATO or larger) could be beneficial depending on what exactly you plan on doing with your firearm.

Is a 20-inch AR-15 Barrel Legal?

Yes! There are no restrictions on owning or purchasing this particular part under federal law within United States unless certain state laws apply such as California where they require rifles be "featureless" if equipped with specific configurations like excessive flash hiders/muzzle brakes/pistol grips etc.. This means that any individual who has passed required background checks may legally own one regardless location within US borders so long their purchase/sale complies with local/state regulations.

However, it's important to note that laws regarding firearms vary from state to state and even within municipalities. It’s the responsibility of the gun owner or buyer, if unsure about their location specific laws, to contact their local authorities (i.e police department) or consult an attorney who specializes in firearm laws.

What are the benefits of using a 20 inch AR-15 barrel compared with other lengths?

As previously mentioned longer barrels can offer better accuracy as well as increased muzzle velocity when compared with shorter alternatives on same platform. These two factors alone make it a popular choice for those who want consistent performance over longer distances while maintaining controllability. Additionally, by using a slightly heavier profile barrel you can mitigate some felt recoil making follow up shots easier and faster than what could be achieved otherwise.

The main downside is that this type of configuration may not be ideal for close quarters combat scenarios where maneuvering space is limited due to its length and weight distribution especially when used indoors or around corners where movement needs quick response times.

Can I swap out my existing barrel for a 20 inch AR-15 Barrel?

Swapping out your current rifle upper receiver kit assembly (or entire upper receiver) with one featuring this type of long-barreled option is possible so long as they both share same caliber specification and gas system length/type such has carbine/mid-length/rifle etc.. However depending on what kind firearm you have originally this might require additional parts such as specific handguards/barrel nut wrenches etc.. You should check compatibility before attempting any modifications yourself if unsure about your knowledge base/skill level.

If doing an upgrade like swapping barrels seems too difficult there are many professionals across US available at gunsmith shops who would be happy to do it for you – just ensure they are knowledgeable enough about working specifically on AR platforms before handing over any money!

How do I maintain my 20 inch ar-15 barrel?

Maintaining your 20 inch AR-15 barrel is important if you want to keep it in good working order and maintain long-term accuracy. A few tips for keeping it clean and well-maintained include:

  • Regular cleaning: Make sure you're cleaning your rifle after each use, or at a minimum every few hundred rounds fired.

  • Use the right tools: You'll need a bore brush, solvent, patches and/or swabs for proper maintenance. There are many commercially available kits that have everything needed for effective cleaning of different caliber rifles such as Hoppe's No. 9.

  • Inspect regularly : Take time inspecting the rifling inside of the bore to make sure there's no excessive fouling/debris buildup (this can lead to decreased accuracy over time). Pay attention to any other signs that might indicate damage such as chips/cracks etc..

With some basic knowledge about firearms care/maintenance, anyone can properly maintain their own rifle regardless whether they built it themselves or not!

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