Dixie Gunworx on Bolt Carrier Groups (BCG’s)
Various options exist with regard to the bolt carrier group in your M4/AR15. Longevity, lubricity and maintenance/cleaning are all important issue to consider. A very common finish on a BCG is a phosphate finish. This is a very durable, long-lasting finish that holds lubricant fairly well. It’s also very economical compared to some other options. […]