You're finally doing it. You're doing that AR-15 build project you've been wanting to take on for a while now. It's gone well so far. You're completely done with the lower assembly, and now you're ready to finish strong with the upper assembly. Since you've shown this much initiative thus far, we wanna cut you a break. You worry about installing the backup sights or optics, and we'll build your upper assembly for ya.
This prebuilt upper assembly comes to you with a lustrous 16-inch stainless steel barrel and made of 416R Crucible stainless steel. The barrel is chambered in .223 Wylde, so it'll reliably accept both .223REM and 5.56mm NATO rounds. It's been coupled with a 13.5-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.
Here's the beginner's guide to 80% lowers.
AR-15 Rifle Upper Assembly Specs
Barreled upper assemblies are assembled in-house before shipment.
Barrel
- Chamber: .223 Wylde
- Contour: M4/Government
- Length: 16”
- Twist Rate: 1:8
- Gas System: Carbine
- Gas Port: 0.750”
- Gas Hole Dia.: 0.070”
- Muzzle Threads: 1/2x28
- Feed Ramps: M4
- Material: 416R Crucible Steel
- Finish: Stainless
- 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: Chrome-Lined
- Gas Key: Staked, Chrome-lined
- Charging Handle: Included
Lower receiver sold separately.
WARNING: Handling firearms parts and certain firearm accessories can expose you to lead and other petroleum products known to the State of California to cause cancer and reproductive harm. For more information, visit www.P65Warnings.ca.gov
Shipping Restrictions
We cannot ship certain parts and accessories to states that prohibit the sale or ownership of such components, like California, New York, and others. Before ordering, see our shipping restrictions for a list of all prohibited states and locales. We try our best to keep our shipping restrictions current, but state laws change almost daily. It is your responsibility to be aware of your local firearms laws before purchasing from our website or machining a firearm.
80-Lower.com only ships within the United States. Federal law prevents international shipments of our products.
WARNING: Handling firearms parts and accessories can expose you to lead and other petroleum products known to the State of California to cause cancer and reproductive harm. For more information go to: www.P65Warnings.ca.gov
Shipping of various parts and/or accessories are prohibited to states and locales (ie New Jersey, California, New York, etc…) with restrictions against certain parts and/or accessories or "assault weapons" (i.e. states with high-capacity magazine restrictions, manufacturing of semi-automatic weapons, etc..). It is your responsibility to be aware of your local firearms laws before purchasing from our website or machining a firearm. We try our best to keep our shipping page current, but laws change daily.
80-Lower.com only ships within the United States. Federal legislation dictates we cannot ship our products internationally.
