This Aegis Lightweight 18-inch Rifle-Gas 5.56 NATO AR-15 Complete Upper Build from Davidson Defense features a robust 7075 T6 aluminum upper receiver with M4 feed ramps, anodized for durability. The heart of this upper is an 18-inch Government profile barrel, made from 4140 gun steel, boasting a 1:7 twist rate and nitride finish for superior longevity and accuracy.
The upper integrates a rifle-length gas system, complemented by a Recoil Technologies micro low-profile gas block, ensuring smooth cycling. The handguard is constructed from lightweight 6061-T6 aluminum with an M-Lok style design in a sleek black finish. The complete bolt carrier group is crafted from 9310 alloy steel and finished with nitride, ensuring reliable operation. A GI birdcage flash hider rounds out this upper build for optimal performance.
Upper Receiver Material: 7075 T6 Aluminum
Upper Receiver Finish: Anodized
Caliber: 5.56x45mm NATO
Barrel Length: 18-inch
Barrel Thread Pitch: 1/2x28
Barrel Finish: Nitride
Barrel Profile: Government
Barrel Twist Rate: 1:7
Barrel Material: 4140 Gun Steel
Barrel Gas System Length: Rifle
Handguard Material: 6061-T6 Aluminum
Handguard Color: Black
Handguard Style: M-Lok
Gas Block Size: 0.75
Charging Handle: AR-15 M4 Charging Handle Mil-Spec Quality
Bolt Carrier Material: 9310 Alloy Steel
Bolt Carrier Finish: Nitride
Muzzle Device: AR-15 1/2x28 TPI GI Birdcage Flash Hider 5.56 .223 A2
Muzzle Thread Pitch: 1/2x28
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