16″ Flat Dark Earth .300 Blackout Upper 12″ M-Lok Rail


Enhance your tactical setup with our 16″ Flat Dark Earth .300 Blackout Upper, featuring a high-performance 4150 nitride processed barrel with a 1×7 twist rate. Designed for precision and longevity, this AR-15 compatible upper includes a 12″ slim M-lok rail, A2 flash hider, and a robust Cerakote finish. Ideal for custom rifle builds, it’s a top choice for accuracy and style.

Product price: $204.95
Total options:
Order total:


16″ .300 Blackout Upper Flat Dark Earth with matching 12″ Slim Matching FDE M-lok Handguard Rail NO Bolt Carrier Group

Our 16″ Flat Dark Earth .300 Blackout Upper has US made accessories that include the following: a flash hider, forward assist, dust cover and barrel along with a military grade AR-15 Upper receiver. This blackout barrel is button rifled at a 1×7 twist rate and nitride coated for more accuracy and longevity . The AR Flat Dark Earth parts are coated with Flat Dark Earth From Cerakote Gun Coatings by a local Certified Applicator for a lasting strong finish on the AR-15 Upper and M-lok Hand guard.

16″Flat Dark Earth .300 Upper Features:

  • Flat Dark Earth Upper and Handguard
  • Chamber – .300 Blackout M4 Feed Ramp
  • Barrel Twist – 1 x 7 twist Button Rifled
  • Thread – 5/8 x 24 rifle thread pattern
  • Barrel Steel 4150 with Black Nitride processed
  • Flash Hider – A2 Bird Cage Flash hider
  • Handguard – 12″ Flat Dark Earth Slim Free Float M-lok Rail
  • Gas Block – .75 Low Profile Gas Block
  • Upper Receiver – Flat Top M4 Flat Dark Earth Upper
  • Bolt Carrier Group – Not Included
  • Charging Handle – Not Included
  • Approx. Weight – 4 pounds
  • Made in the USA
  • SKU: DT11-054


Daytona Tactical test fires every custom AR-15 upper to verify cycling. However, we cannot guarantee cycling with all .300 Blackout ammunition due to vast differences in the quality of ammunition. Will only warranty cycling with US made ammunition. We can not warranty cycling of the AR Upper with imported, steel cased or reloaded rounds.

Additional information

Weight 9 lbs


Barrel Length

Barrel Chamber

Barrel Twist

Barrel Thread

Barrel Material

Barrel Finish

Barrel Gas System

Gas Block Diameter

Handguard Length



Accessory Attachment Style



There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.