AR-15 Barrels

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Every marksman knows that barrels are key to firearm performance. Wing Tactical offers a collection of AR-15 barrels from today’s top firearm components manufacturers like Ballistic Advantage and Spike’s Tactical. Your choice of barrel length likely depends on your shooting scenario — that’s why we carry AR barrels in a variety of calibers and lengths. If you’re not sure which barrel is right for your build, reach out to one of our experts. We’re always happy to help.

AR-15 with custom barrel, muzzle device, and optic on a grey workbench.

AR-15 Barrels from Wing Tactical: Your Source for Custom AR Components

Whether you’re building your first AR-15 or customizing a rifle you’ve had for years, Wing Tactical’s collection of AR barrels was curated just for you.

Our collection features AR-15 barrels in numerous lengths (including 18”, 16”, 14.5”, and 4.5”) and calibers (like .223/5.56, .300 Blackout, and 9mm). If you’re looking for a highly customized barrel in an uncommon configuration, reach out to our customer service team — we’re happy to point you in the right direction.

Spike’s Tactical 16’ .300 Blackout AR-15 barrel made from CMV alloy

Barrel Materials

Wing Tactical offers AR-15 barrels made from a variety of materials. Some of the most common barrel metals include stainless steel and CMV alloy steel — both are well-represented in our collection. Shooters can also choose barrels in a variety of finishes including nickel boron, QPQ nitride, and MIL-SPEC phosphate.

Ballistic Advantage Modern Series 5.56 AR-15 barrels in multiple lengths

Barrel Length

Many shooters choose a barrel length that’s most compatible with their firearm’s intended use. While hunters might choose a longer barrel for access to extended ranges, home defense gun owners might opt for a mid-length or short barrel for maneuverability indoors. Wing Tactical’s collection features barrels in a variety of lengths, including (but not limited to):

  • 4.5”
  • 7.5”
  • 10.5”
  • 14.5”
  • 16”
  • 18”
  • 20”
 ODIN Works 7.5” 9mm AR barrel with a raw stainless steel finish


While the AR-15 was originally chambered in .223, today’s shooters have multiple calibers to choose from. Marksmen generally choose a caliber based on personal preferences, firearm applications, and ammunition availability. Wing Tactical carries AR-15 barrels in the following calibers:

  • .223/5.56
  • .300 Blackout
  • .350 Legend
  • 6.5 Grendel
  • 6mm ARC
  • 9mm

Wing Tactical: AR-15 Parts and Accessories for Today’s Top Marksmen

Wing Tactical’s collection is curated by shooters for shooters. Law enforcement officers, military personnel, hunters, competitive shooters, and civilians alike trust our products: they’re second to none.

If you’re an active duty soldier or law enforcement officer, learn more about our discounts — it’s the least we can do to show our gratitude for your service. We also offer a 30-day hassle-free return policy and same-day shipping on orders placed before 1 pm EST.

Frequently Asked Questions

What is the best barrel length for an AR-15?

Your choice of barrel length will depend on a few factors:

  • Your firearm’s intended purpose
  • Personal preference
  • Carry weight restrictions

Gunsmiths looking to build a lightweight firearm might opt for a relatively short barrel; hunters might choose a longer barrel for greater accuracy. If you’re not sure which length is right for your next build, the experienced team at Wing Tactical is happy to weigh in.

How many rounds should an AR barrel last?

Each manufacturer stipulates a specific lifespan for their barrels — read your owner’s manual or your component’s specifications closely to learn more about your barrel’s longevity. Of course, you can extend the life of your barrel by snaking the bore regularly, carefully storing your rifle, and handling your firearm with care to prevent dents and scratches.

Which caliber should you choose?

Like barrel length, caliber choice is often dependent upon personal preference, shooting application, and other factors. While an AR-15’s standard chambering (.223/5.56) might work best if you plan to use your rifle for target practice, competition shooting, or home defense, you might choose a round with a larger bullet or improved ballistics at long ranges for hunting applications. Or, you might choose a caliber to match a firearm you already have in your collection in order to standardize your ammunition.

How do you choose a barrel length that complies with regulations?

Firearm regulations are complex, and they’re subject to change. To make sure your barrel and build are compliant with local regulations, read federal, state, and local laws carefully or reach out to a local law enforcement agency for advice.

How does a barrel fit into an AR-15?

An AR-15 barrel is attached to the upper receiver — a group of components that also includes a handguard, gas block, gas tube, bolt carrier group, and charging handle. If you’re looking for a barrel that’s already attached to an upper receiver, check out Wing Tactical’s selection of complete upper receiver assemblies.