Precision meets value in this complete stainless steel 5.56 NATO upper, featuring a lightweight M-LOK handguard and a "plug-and-play" design for any standard AR-15 lower.
This AR-15 Complete Upper is a high-value, "ready-to-run" solution for your next AR-15 build or upgrade. Chambered in 5.56 NATO, this assembly features a 16-inch M4 contour barrel crafted from 416R Stainless Steel, offering a sleek look with enhanced corrosion resistance and precision.
The barrel utilizes a 1:8 twist rate, providing excellent stability for a wide range of bullet weights, while the carbine-length gas system ensures reliable cycling. It comes equipped with a 15-inch M-LOK Split Rail, which significantly reduces weight without sacrificing attachment space for lights, grips, or lasers.
Designed for ease of use, this is a standard rear-charging model that includes both the Bolt Carrier Group (BCG) and charging handle. It is fully compatible with any mil-spec AR-15 lower receiver, making it one of the most cost-effective ways to get a stainless-steel barreled rifle onto the range.
What’s Included
This kit is not a firearm. It includes an assembled upper receiver, bolt carrier group, and charging handle.
AR-15 Upper Receiver Group Specifications
Barreled uppers are assembled in-house before shipment.
Barrel
- Chamber: 5.56 NATO
- Contour: M4
- Length: 16”
- Twist Rate: 1:8
- Gas System: Carbine
- Gas Block: 0.750”
- Muzzle Threads: 1/2 x 28
- Feed Ramps: M4
- Material: 416R Stainless Steel
- Finish: Stainless
- Muzzle: Twisted Flash Hider
Handguard
- Attachment System: Free-Float 15" M-LOK
- Finish: Anodized Black
- Top Rail: Picatinny, Split Rail
- Material: 6061-T6 Billet
- Attachment: Barrel Nut
Upper Receiver
- Profile: M4 Flat-top, Rear Charging
- Material: Forged 7075-T6 Aluminum
- Finish: Type III Hardcoat Anodized (Mil-Spec)
Bolt Carrier Group
- Profile: M16/Full-Auto
- Steel: 9310 Tool, HPT/MPI-tested
- Exterior: Black Nitride
- Interior: Black Nitride
- Gas Key: Staked
- Charging Handle: Included
Lower receiver sold separately.
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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.
- Caliber:
- 5.56
- Barrel Size:
- 16"
- Twist Rate:
- 1/8
- Barrel Finish:
- Parkerized
