AR-15 Bolt Carrier Groups

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If you’re in the market for a new AR-15 BCG, Wing Tactical is here to help. Whether you’re building your first AR, upgrading a firearm for improved performance, or replacing a malfunctioning part, you’ll find the perfect AR-15 bolt carrier group in our quality-first components collection.

AR-15 bolt carrier group components laid on a workbench

AR-15 Bolt Carrier Groups: A Key Component of Any AR

As one of the most vital pieces of your firearm, your AR-15 bolt carrier group (BCG) needs to be 100% reliable. In conjunction with the gas system, the AR-15 BCG is responsible for cycling through the order of operations, including loading the chamber, firing the bullet, and ejecting the empty case.

Due to the modular characteristics of the AR-15, you have the freedom to upgrade your bolt carrier group if you aren't satisfied with how your firearm is operating. At Wing Tactical, we carry many BCGs for shooters to perfect their builds.

When looking to upgrade your bolt carrier group, you should be aware of the four available types. These carriers function almost identically and can be used interchangeably in your AR-15.

Odin Works full auto black nitride bolt carrier group

M16 Full-Auto BCGs

This heavier configuration leads to a slower and smoother cycling rate. An M16 BCG will function in an AR-15, but it doesn't make it fully automatic.

Phase 5 Tactical Nickel Boron AR-15 Bolt Carrier Group

AR-15 Semi-Auto BCGs

This profile is nearly identical to the M16 BCG. The main difference is its reduced mass at its rear, making it lighter.

Spike’s Tactical lightweight nickel boron BCG

Lightweight BCGs

This type of bolt carrier group is typically fluted and features cutouts to remove weight wherever possible. The lower weight reduces felt recoil and helps the gun cycle faster, making it a perfect option for those who take part in competitions.

Kaw Valley Precision .45 ACP blowback bolt carrier group

Direct Blowback BCGs

These BCGs are designed for pistol-caliber AR-15s that use a different type of lockup system.

Wing Tactical Guarantees

With Wing Tactical by your side, you'll know you're getting the best bolt carrier groups the market has available. Our extensive inventory and high standards ensure that we provide you with only the best products you can get your hands on. We also offer some valuable guarantees like:

  • Quick shipping services – Our same-day shipping brings your products to your doorstep as quickly as possible.
  • LEO and military discounts – As a veteran-owned enterprise, we know how hard our military and law enforcement personnel work daily. We offer these men and women discounts to give them the equipment they need at affordable prices.
  • Wing Tactical seal of approval – We are incredibly selective in what we sell and only stock firearm parts and accessories that our experts would depend on themselves.
  • Exceptional customer service – With attentive customer interactions and our 30-day hassle-free return policy, we strive to ensure that you are always happy with the services and products you receive.

When you've decided to upgrade your bolt carrier group, you can count on Wing Tactical to bring you the quality parts you need to give yourself an edge. Browse our extensive catalog of complete AR-15 BCGs and individual components to find the perfect fit for your gun.

You can also get in touch with our knowledgeable team for assistance if you have questions.

Frequently Asked Questions

Why should you upgrade your bolt carrier group?

While there are many ways to improve a stock AR-15, upgrading your bolt carrier group is one of the bigger wins for taking your AR to the next level.

It's essential to consider what you want out of your gun and the areas that you think need improvements. How you choose to upgrade it will determine what sort of performance boosts your experience.

Some typical benefits of an enhanced AR-15 BCG include:

  • Improved dependability
  • Higher resistance to wear and tear
  • Faster firing action
  • Enhanced smoothness

What features should you look for in a bolt carrier group?

While you can purchase a bolt carrier group for your AR-15 fully assembled, you can also buy the parts you need and put it together yourself. No matter which route you decide to take, there are some features that you should look for when purchasing:

  • Metals – Manufacturers commonly use durable steel to create these BCGs, such as Carpenter 158 or 8620. You may also find bolt carrier groups manufactured from aluminum or titanium — lighter alternatives to steel.
  • Advanced coatings – These coatings typically add lubricity and increase resistance to wear, carbon buildup, and corrosion. Standard finishes include parkerizing, black nitride, nickel boron, titanium nitride, and diamond-like carbon.
  • Testing – Quality tests such as high-pressure testing and magnetic particle inspection are essential to determining whether the bolt carrier group has the strength to withstand long-term operation without suffering cracks or damage.

How does a bolt carrier group fit into an AR-15?

The bolt carrier group easily slides into the upper receiver at the same time as the charging handle (which manually controls the bolt carrier group). To replace your bolt carrier group, you’ll have to detach the upper receiver from the lower receiver and remove the charging handle.

Can you buy an upper receiver with a bolt carrier group already installed?

Yes! While you don’t need any specialized tools to install a bolt carrier group, other upper receiver components can require them. If you’re looking to save time at the workbench, save money on tools, or simplify your build, check out Wing Tactical’s selection of complete upper receiver assemblies.