AR Bolt Carriers interchangeable with different uppers? Is it okay to use the same bolt carrier group on a new barrel?
Yes, bolt carrier groups (BCGs) are interchangeable between different AR-15s. However, there are a few things to keep in mind when doing so. First, make sure that the bolt carrier group you’re using is compatible with the barrel extension and buffers/recoil springs of your AR-15. Second, it’s generally advisable to use a BCG that is designed for the specific lower receiver you’re using. This will ensure that the BCG functions smoothly and properly with your lower receiver. Finally, be sure to thoroughly clean and lubricate your BCG before installing it in your AR-15. Doing so will help ensure the optimal performance and longevity of your BCG.