BCM 10,000 ROUNDS!
This video details a rigorous 10,000-round endurance test of a BCM Direct Gas Impingement (DI) AR-15 rifle conducted over five years without any cleaning or lubrication. The test highlights the DI system's inherent reliability, even under extreme conditions, and demonstrates how carbon buildup can eventually impede function. The importance of lubrication for sustained performance is clearly illustrated.




