AR15 hasn't been cleaned for 7,000 rounds! Can it make it to 10k rounds?
This BCM AR15 successfully reached 7,580 rounds without cleaning or lubrication, demonstrating the reliability of direct impingement systems. Despite significant carbon fouling and observable gas port erosion, the rifle experienced zero malfunctions. The test highlights that modern DI AR15s can be highly reliable even under extreme neglect, challenging the notion that piston systems are inherently superior for reliability.









