The Cirdan 16-inch AR-15 5.56 NATO Rifle Complete Upper Build from Davidson Defense is engineered for reliable performance across various applications. This upper features a 16-inch 5.56 CMV barrel with a pinned front sight base and a 1:7 twist rate, made from 4150 CrMoV steel for durability. The carbine-length gas system ensures efficient operation, pairing with a 0.750 gas block size for optimized gas flow. The stripped upper receiver is crafted from 7075 T6 aluminum with M4 feed ramps and is finished with anodizing for protection against wear.
The handguard, made from 6061-T6 aluminum, is Type III hard coat anodized in black. Included in the build is a KAK Industry Big Hole Brake, AR-15 M4 charging handle, and a complete bolt carrier group made from 9310 alloy steel with a nitride finish.
Caliber: 5.56x45mm NATO
Barrel Name: 16" 5.56 CMV Barrel w/ Pinned FSB, Carbine Length
Barrel Length: 16-inch
Barrel Material: 4150 CrMoV
Barrel Thread Pitch: 1/2x28
Barrel Twist Rate: 1:7
Color: Black
Gas System: Carbine
Gas Block Size: 0.750
Upper Receiver Name: Stripped Upper Receiver with M4 Feed ramps
Upper Receiver Material: 7075 T6 Aluminum
Upper Receiver Finish: Anodized
Handguard Material: 6061-T6 Aluminum
Handguard Color: Black
Handguard Finish: Type III Hard Coat Anodized
Muzzle Device: KAK Industry Big Hole Brake
Muzzle Thread Pitch: 1/2x28
Muzzle Device Finish: Phosphate
Charging Handle: AR-15 M4 Charging Handle Mil-Spec Quality
Bolt Carrier Name: AR-15 5.56/.223/.300/.350 Complete Bolt Carrier Group
Bolt Carrier Material: 9310 Alloy Steel
Bolt Carrier Finish: Nitride
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