Tag: BCG

E2 Armory Bolt Carrier TFB REVIEW: The New SureFire OBC - AR-15 Optimized Bolt Carrier 2A Armament Patent Brownells Titanium AR-15 and AR-10 Bolt Carrier Groups (1) Brownells Lightweight AR-15 Bolt Carrier Group (1) Faxon Firearms Faxon Firearms

Problem with NiB coating

EmptorMaven posted up an interesting observation regarding Nickel Boron coated BCGs. He surmises that if fouling can adhere to the BCG then it is possible it can build up to the point of failure. Here is a comparison picture of a heavily used chromed BCG vs a NiB BCG.