Bolt Carrier Groups (BCG) & Parts

If you’re building an AR, looking to change calibers, or just need to change out the BCG in your current AR, this section showcases many different options. Check out our Black Nitride finish BCGs which are easy to clean, don’t require a lot of oil, and are durable and corrosion resistant. If you are looking for something unique with a little flash, yet still a good value, the United Defense Nickel Boron has a nice silvery nickel finish, needs even less oil due to its chemical properties, and is really easy to clean.