BKF AR15 8″ 300 BLK 1/7 Twist 4150 Barrel W/ 9.25″ Slim M-LOK Rail W/ KAK Flash Can (Ballistic Advantage)

(2 customer reviews)


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This product is 100% Made in the USA! Our gas tubes, gas blocks and even roll pins are all proudly manufactured in the US.


  • BKF Dry Film Lubed Assembled Upper Receiver w/ T-Marks
  • Parallax Tactical Slim Profile 9.25″ Slim M-LOK Handguard W/ QD Mounts 3 & 9 O’clock on Rear
  • Ballistic Advantage 8″ 4150 chrome moly vanadium DRP barrel in .300 Blackout W/ Pistol Length Gas system and 1:7 TWIST with  QPQ Corrosion Resistant. (nitride)
  • KAK Industries Slim 5/8×24 Flash Can
  • .750 Low Profile Gas Block and Pistol Length Gas Tube
  • Product comes assembled
  • No BCG or Charging Handle

Standard Upper Features:

  • M4 Feedramps
  • .250 takedown pin holes
  • Laser engraved T-marks
  • Upper is Assembled

 Parallax Tactical 9.25″ Slim M-LOK

  • Super Slim Profile (1.360″) inside diameter
  • QD mounts at 3 and 9 O’clock at rear
  • Simple Lightweight design (7.5oz)
  • M-LOK Compatible
  • Made in the USA!!!


Additional Info

Caliber – 300 Blackout

Barrel Length – 8″

Barrel Material – 4150 Chrome Moly Vanadium

Profile – DRP

Finish – QPQ Corrosion Resistant

Gas System Length – Pistol

Gas Block Journal – .750″

Twist Rate – 1:7 inches

Muzzle – 5/8×24 Threaded

Total Weight of Upper Receiver without BCG – 2lb 5oz

All NFA/ATF Rules Apply
You may use this barrel with a lower receiver that is a Registered SBR, Machine Gun, or Pistol. Possession of this barrel along with a Non-NFA lower receiver is Prohibited, except when permanently attaching a muzzle device extending the length to 16 inches.

Additional information

Weight 3 lbs
Dimensions 20 × 4 × 4 in

2 reviews for BKF AR15 8″ 300 BLK 1/7 Twist 4150 Barrel W/ 9.25″ Slim M-LOK Rail W/ KAK Flash Can (Ballistic Advantage)

  1. Brian H. (verified owner)

    Absolutely amazing! High quality product and expertly put together. I slapped the upper on a Ruger lower I built and it’s a nice tight fit that functions flawlessly. I haven’t been able to test the accuracy at longer range yet but judging by everything else, I expect it will be great. Outstanding customer service and lighting fast shipping. Placed my order on line, looked down and all of a sudden there was an upper in my lap… Thanks a lot! This is my new place to go for AR accessories.

  2. Negil T. (verified owner)


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