This Aegis Lightweight 16.5-inch Mid-Gas Complete Upper Build Kit from Davidson Defense is constructed from durable 7075-T6 aluminum, and the upper receiver features an anodized finish. The build includes a 16.5-inch medium profile barrel made from 4150 Chrome Moly Vanadium steel with a nitride finish, offering a 1:7 twist rate and mid-length gas system for optimal cycling. A 0.75-inch gas block ensures reliable gas flow. The freefloat M-Lok handguard, made from 6061-T6 aluminum, provides ample mounting space for accessories while maintaining a sleek profile in black. This complete upper also incorporates an AR-15 TPI GI Birdcage flash hider and includes a mil-spec charging handle and a nitride-coated 8620 alloy steel bolt carrier.
Platform: AR-15
Caliber: 5.56x45mm NATO
Barrel Length: 16.5 inches
Barrel Material: 4150 Chrome Moly Vanadium
Barrel Finish: Nitride
Barrel Profile: Medium
Barrel Twist Rate: 1:7
Barrel Thread Pitch: 1/2x28
Barrel Gas System Length: Mid-Length
Gas Block Size: 0.75 inches
Upper Receiver Material: 7075-T6 Aluminum
Upper Receiver Finish: Anodized
Handguard Material: 6061-T6 Aluminum
Handguard Color: Black
Handguard Style: M-Lok
Muzzle Device: AR-15 TPI GI Birdcage Flash Hider
Muzzle Device Finish: Phosphate
Bolt Carrier Material: 8620 Alloy Steel
Bolt Carrier Finish: Nitride
Charging Handle: AR-15/M4 Charging Handle, Mil-Spec
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