The Fossil Maker 16-inch AR-15 5.56 NATO Rifle Complete Upper Build from Davidson Defense combines durable construction with precision components for reliable performance in varied shooting conditions. Featuring a 16-inch cold hammer forged barrel with an M4 profile and a twist rate of 1:7, this upper is designed for optimal accuracy and consistency. The carbine-length gas system ensures smooth cycling, while the upper receiver, crafted from 7075 T6 aluminum and finished in anodized black, provides strength and longevity. The bolt carrier is constructed from 9310 alloy steel with a nitride finish for enhanced durability. A .750 gas block accommodates efficient gas regulation, and the AR-15 1/2x28 TPI GI Birdcage flash hider minimizes muzzle flash. The 12-inch minimalist aluminum handguard offers a lightweight profile, complemented by a mil-spec charging handle. This complete upper build is ideal for gunsmiths seeking a functional and dependable AR-15 platform.
Caliber: 5.56 NATO
Barrel Length: 16”
Barrel Material: Cold Hammer Forged
Finish: Parkerized
Profile: M4 Profile
Twist Rate: 1:7
Gas System: Carbine-Length
Upper Receiver Material: 7075 T6 Aluminum
Upper Receiver Finish: Anodized
Bolt Carrier Material: 9310 Alloy Steel
Bolt Carrier Finish: Nitride
Gas Block Size: .750
Muzzle Device: AR-15 1/2x28 TPI GI Birdcage Flash Hider
Muzzle Thread Pitch: 1/2x28
Charging Handle: AR-15 Mil-Spec Charging Handle
Charging Handle Color: Black
Handguard Material: Aluminum
Handguard Style: Minimalist
Handguard Length: 12”
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