Please note: We strive to provide the most accurate photographs of our product. Due to availability limitations and supply chain constraints, slight variations of the handguard of this upper assembly may occur in the aesthetics of the skeletonizations in between the M-Lok sections.
If you've caught that certain spark, and now you're looking to build your own AR-15 chambered in .300BLK (.300 AAC blackout), you might as well do it with some damned style. Check out this .300BLK built kit. The core of its attitude is a 16-inch stainless steel barrel that's been coated in black nitride and given bear claw fluting for that extra in-your-face flair. Plus, it's side-charging, so your new baby won't be boring. It's also got a 12" free-floating M-Lok handguard on which to mount your light, laser, or whatever else.
What’s Included
This is not a firearm. It includes an assembled upper receiver and a side charged bolt carrier group.
300 Blackout Upper Assembly Specs
Barrel
- Chamber: .300 AAC Blackout
- Contour: Heavy
- Length: 16”
- Twist Rate: 1:8
- Gas System: Carbine
- Gas Port: 0.750”
- Gas Hole Dia.: 0.070”
- Muzzle Threads: 5/8x24
- Feed Ramps: M4
- Material: 4150 CMV
- Finish: Stainless Steel and Black Nitride
- Process: Button Rifled
- Lining: None
- Extension: M4
- Muzzle: A2 “Birdcage” Flash Hider
Handguard
- Attachment System: 12" M-Lok
- Finish: Type III Hardcoat Anodized (Mil-Spec)
- Top Rail: M1913 Picatinny
- Material: Billet 6061-T6 Aluminum
- Attachment: Barrel Nut
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: 9310 Tool, HPT/MPI-tested
- Exterior: Black Nitride
- Interior: Black Nitride
- Gas Key: Staked,
- Charging Handle: Included
Lower receiver not included.
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.
- Platform:
- AR15
- Caliber:
- .300 AAC Blackout
- Barrel Size:
- 16"
- Barrel Finish:
- Nitride
- Twist Rate:
- 1/8
