AR-15 .223/5.56 Complete Upper Configurator

Choose with confidence, each of these barrels is covered by our satisfaction guarantee.

Note: The armorer assembling your upper will select the appropriate length gas tube for the barrel you choose.

Note: If you purchase an assembly service, the armorer assembling your upper will select the appropriate length gas tube for the barrel you chose.

Be sure you get the correct thread pattern based on the barrel you selected.

Don't worry if there are any compatibility issues with the receiver you chose, we'll contact you with alternative options.

Please note that some upper receivers may not be compatible with a forward assist (ie. Slick Side Uppers).

This step is optional so feel free to skip if you already have a BCG or plan on getting one elsewhere.

This step is optional so feel free to skip if you already have a charging handle or plan on getting one elsewhere.