Re: AR 15 bolt cam
Im assuming you mean a roller cam pin, since a bolt cam is standard in every BCG. However a roller cam isnt a great plan for a standard AR, as you need to remove the gas key to install it. Meaning you need to remove the gas key to clean the bolt, not an undertaking most want to do every cleaning. Roller cams work in gas piston systems as they don't has a "gas key" and clearance isnt an issue. Thats the last i heard, others may know a bit more.