The Fossil Maker 7.62 16-inch AR-15 7.62x39 Rifle Upper Build Kit from Davidson Defense is engineered for durability and reliability. This upper assembly features a 16-inch barrel made from 4150 CrMoV steel, with a black nitride finish and HBar profile, ensuring resilience under various conditions. The barrel boasts a 1:10 twist rate and comes threaded with a 5/8x24 muzzle thread for compatibility with a variety of muzzle devices. The kit includes a carbine-length gas system, complemented by a .750 gas block from Recoil Technologies, allowing for smooth operation. The upper receiver is constructed from robust 7075-T6 aluminum and finished with anodizing to resist wear and corrosion. It comes equipped with an AR-15/AR-10 .308 5/8x24 TPI GI birdcage flash hider, finished in manganese phosphate for added durability. This build kit provides a comprehensive foundation for any gunsmith looking to create a powerful, efficient rifle upper.
Caliber: 7.62x39
Barrel Length: 16 inches
Gas System: Carbine Length
Profile: HBar
Twist Rate: 1:10
Finish: Black Nitride
Muzzle Thread: 5/8x24
Barrel Material: 4150 CrMoV
Upper Receiver Material: 7075-T6 Aluminum
Upper Receiver Finish: Anodized
Gas Block Size: .750
Gas Block Name: Recoil Technologies Micro Low-Profile Gas Block
Muzzle Device: AR-15/AR-10 .308 5/8x24 TPI GI Birdcage Flash Hider
Muzzle Device Finish: Manganese Phosphate
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