This review of the Sharps Rifle Company Extreme Bolt Carrier Group (BCG) highlights its construction from S7 tool steel with a proprietary heat treatment and Diamond-Like Carbon (DLC) coating. After approximately 1000 rounds with zero lubrication, the BCG showed minimal wear and no malfunctions, demonstrating impressive durability and ease of cleaning. While the DLC coating showed some wear on lug surfaces, the overall performance and balanced recoil impulse suggest it's a significant upgrade for those seeking maximum reliability in their AR-15 builds.
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