5.56 AR 15 Upper Assembly – 16″ Parkerized Barrel, 1:8 Twist Rate with 15″ M-Lok Handguard

So half-way done with building your own AR-15. You’ve gotten as far as building the bottom half, and you’re now ready to tackle your upper assembly. Think of it this way: you’re not half-way done, you’re damn near completely done. Because if you can turn a screwdriver, allen wrench, or socket wrench to install backup sights or optics, we’ll build your upper assembly, the rest of your rifle, for you.

This prebuilt upper assembly comes to you with a 16-inch parkerized barrel, chambered in 5.56mm NATO, and made of 4150 chrome moly vanadium steel. It’s been coupled with a 15-inch free-floating MLOK handguard. It also comes with the charging handle and BCG. All you need to do is install the sights or optic of your choice and then mount it onto your completed lower assembly. 

PLEASE NOTE: This is a prebuilt upper assembly only. It includes an assembled upper receiver, bolt carrier group, and charging handle.

AR-15 Rifle Upper Assembly Specs

Barreled upper assemblies are assembled in-house before shipment.

Barrel

• Chamber: 5.56mm NATO
• Contour: M4/Government
• Length: 16”
• Twist Rate: 1:8
• Gas System: Carbine
• Gas Port: 0.750”
• Gas Hole Dia.: 0.070”
• Muzzle Threads: 1/2×28
• Feed Ramps: M4
• Material: 4150 CMV
• Finish: Parkerization
• Process: Button Rifled
• Lining: None
• Extension: M4
• Muzzle: A2 “Birdcage” Flash Hider

Handguard

• Attachment System:  15″ M-Lok, Lightweight
• Finish: Type III Hardcoat Anodized (Mil-Spec)
• Top Rail: M1913 Picatinny
• Material: Billet 6061-T6 Aluminum
• Attachment: Barrel Nut 

Stripped Upper Receiver

• Profile: M4 Flattop
• Material: Forged 7075-T6 Aluminum
• Finish: Type III Hardcoat Anodized (Mil-Spec)

Bolt Carrier Group

• Profile: M16/Full-Auto
• Steel: Carpenter No. 158 (Mil-Spec)
• Exterior: Black Nitride
• Interior: Black Nitride
• Gas Key: Staked
• Charging Handle: Included

Lower receiver sold separately.