The Orome 5.56 18-inch AR-15 Complete Upper Build from Davidson Defense is engineered for accuracy and reliability. Chambered in 5.56x45mm NATO, it features an 18-inch government profile barrel crafted from durable 4150 CrMoV steel with a nitride finish for corrosion resistance. The 1:7 twist rate ensures optimal bullet stabilization. The upper assembly includes a rifle-length gas system, 0.750 gas block, and a GI Birdcage flash hider. Constructed from 7075 T6 aluminum, the anodized upper receiver is lightweight yet robust. An M-Lok handguard made from 6061-T6 aluminum offers versatile accessory attachment options and a secure grip. The complete assembly comes with a Mil-Spec AR-15 M4 charging handle and a premium nitride-finished bolt carrier group made from 9310 alloy steel, ensuring reliable cycling and performance. This lightweight upper build is ideal for gunsmiths seeking precision and freedom in their firearms.
Caliber: 5.56x45mm NATO
Barrel Material: 4150 CrMoV
Barrel Thread Pitch: 1/2x28
Color: Black
Barrel Gas System Length: Rifle
Barrel Length: 18-inch
Barrel Finish: Nitride
Barrel Profile: Government
Barrel Twist Rate: 1:7
Gas Block Size: 0.750
Handguard Material: 6061-T6 Aluminum
Handguard Color: Black
Handguard Style: M-Lok
Muzzle Device: AR-15 1/2x28 TPI GI Birdcage Flash Hider 5.56 .223 A2
Muzzle Thread Pitch: 1/2x28
Upper Receiver Material: 7075 T6 Aluminum
Upper Receiver Finish: Anodized
Charging Handle: AR-15 M4 Charging Handle Mil-Spec Quality
Bolt Carrier: Recoil Technologies Premium Complete Bolt Carrier Group
Bolt Carrier Material: 9310 Alloy Steel
Bolt Carrier Finish: Nitride
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