Product Description
The DD-15A4 20-inch AR-15 5.56 NATO Rifle Full Build Kit from MCS provides all the essential components needed for a complete firearm assembly. This kit includes a 20-inch HBAR barrel made from durable 4150 CrMoV steel with a nitride finish, featuring a 1:7 twist rate and standard rifle gas system. The upper receiver is crafted from 7075-T6 aluminum with an anodized finish, ensuring strength and longevity. The assembly comes with a Mil-Spec AR-15 M4 charging handle, and a complete 9310 alloy steel bolt carrier group, finished with nitride for reliability. The kit includes a synthetic fixed A2 stock and a rifle-length aluminum drop-in quad rail handguard, both in black. Completing the build is an AR-15 birdcage flash hider that features a 1/2x28 thread pitch and manganese phosphate finish. This full build kit is engineered for precision and reliability, perfect for any gunsmith who values freedom.
Specifications
Caliber: 5.56x45mm NATO
Barrel Material: 4150 CrMoV
Barrel Length: 20-inch
Barrel Finish: Nitride
Barrel Profile: HBAR
Barrel Twist Rate: 1:7
Barrel Gas System: Rifle
Upper Receiver Material: 7075-T6 Aluminum
Upper Receiver Finish: Anodized
Charging Handle: Mil-Spec AR-15 M4 Charging Handle
Bolt Carrier Material: 9310 Alloy Steel
Bolt Carrier Finish: Nitride
Bolt Carrier Name: AR-15 5.56/.223/.300/.350 Complete Bolt Carrier Group
Rifle Stock: A2 Stock, Synthetic Fixed Stock
Handguard Material: Aluminum
Handguard Color: Black
Handguard Style: Rifle Length Drop-In Quad Rail
Muzzle Device: AR-15 1/2x28 TPI GI Birdcage Flash Hider
Muzzle Thread Pitch: 1/2x28
Muzzle Device Finish: Manganese Phosphate
