AR Bolt Carriers interchangeable with different uppers? Is it okay to use the same bolt carrier group on a new barrel?
When it comes to firearms, many parts are interchangeable between different models. However, many parts are specific to a particular model and cannot be used with other types of firearms. Bolt carrier groups (BCGs) fall into the latter category.
A BCG is a key component of an AR-15 rifle and is what facilitates the automatic loading and firing of rounds. It is not possible to simply swap out a BCG from one rifle to another and have it work properly. Each BCG is specifically designed for use with a particular type of firearm.
The bottom line is that bolt carrier groups are not interchangeable between different models of firearms. If you’re looking to upgrade or replace the BCG in your AR-15, be sure to select one that is specifically designed for use with that rifle.