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Yankee Hill Machine 88207 Black Diamond Carbine XL 556 1:7 Twist
Overview A complete AR-15 rifle chambered in 5.56 NATO with a 16" barrel and premium Diamond Series components. Key specs: Caliber 5.56 NATO, Capacity 30 rounds, Barrel 16 with 1:7 twist and Phantom 5C2 flash hider, Sights Flip Up, Receiver Upper and Receiver Lower both 7075-T6 Aluminum Black, Stock Adjustable, Handguard Specter XL Rifle Length Diamond, Weight 6.9 lbs, T Mark Upper Receiver, 16" 4140 Steel Barrel Heat Treated to RC 25-32, Diamond fluting for rigidity and cooling, Phantom 5C2 Flash Hider/Compensator, Specter XL Diamond Handguard, Forearm Endcap, Low Profile Gas Block, Forearm Mounted Flip Front Sight, Flip Rear Sight, Adjustable Commercial Carbine Stock, Includes Internal Parts.
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A comprehensive overview of every major component in an AR-15 build—including what's inside bolt carrier groups and parts kits—organized by assembly for new builders.
12 min read
Guide
A neutral guide to component strategies for left-handed shooters, left-eye dominant right-handed shooters, and those managing eye/hand dominance mismatches. Covers ambi uppers, charging handles, gas system tuning, and real-world tradeoffs.
6 min read