BKF AR15 10.5″ .223 Wylde Govt 1/7 Twist 4150 Steel Barrel W/ 11.5″ FFSSR M-LOK Rail W/ KAK Flash Can

(20 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 Assembled Upper Receiver w/ T-Marks
  • Parallax Tactical Slim Profile 11.5″ Slim FFSSR M-LOK Handguard W/ QD Mounts 3 & 9 O’clock on Rear and front
  • 10.5″ stainless 4150 steel Govt barrel in .223 Wylde W/ Carbine Length Gas system and 1:7 TWIST
  • KAK Industries Slim 1/2×28 Flash Can
  • .750 Low Profile Gas Block and Carbine 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 11.5″ Slim M-LOK FFSSR

  • Super Slim Profile (1.360″) inside diameter
  • Lightweight design (9oz)
  • Free Floated
  • QD Swivel mounting holes at the 3 and 9 oclock positions at front and rear
  • Picatinny rails at the 3, 6 and 9 oclock positions
  • M-LOK Compatible
  • Made in the USA!!


Additional Info

Caliber – .223 Wylde

Barrel Length – 10.5″

Barrel Material – 4150 Chrome Moly Vanadium

Profile – Govt

Finish – stainless

Gas System Length – Carbine

Gas Block Journal – .750″

Gas Hole Diameter – 0.093

Twist Rate – 1:7 inches

Muzzle – 1/2×28 Threaded

Total Weight of Upper Receiver without BCG – 2lb 15oz

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

20 reviews for BKF AR15 10.5″ .223 Wylde Govt 1/7 Twist 4150 Steel Barrel W/ 11.5″ FFSSR M-LOK Rail W/ KAK Flash Can

  1. John B. (verified owner)

    Awesome product. Very well assembled, and functions perfectly.

  2. Bernard King (verified owner)

    This upper shoots amazing. I mounted it on a Rock river lower with a KAK blade. Optic used is a Holosun. The slim center section of the hand guard makes for a perfect grip.
    Gun shoots right at 1 moa. This is now my go to SHTF AR

  3. Terry V. (verified owner)

    Haven’t had a chance to shoot it yet but it fit perfectly on my bushmaster lower.

  4. johnsoncody91 (verified owner)

    Better than I expected and arrived super fast!

  5. Cody Johnson (verified owner)

    Great product, great prices, shipped super fast. Will use these guys again!

  6. jacque m. (verified owner)

    Good quality for a great price. Shot 500+ rounds though mine and no issues. No complaints at all

  7. David C. (verified owner)

    Well built plus accurate

  8. Malcolm C. (verified owner)

    Love it! Arrived on-time, looks great, and shoot perfectly.

  9. Don (verified owner)

    I have always wanted to build a shorter style of AR-15 and BKF had the best upper for what I wanted to put together. Great quality and timely shipping. Great job!

  10. Parris Hugley (verified owner)

    fantastic parts and time frame excellent

  11. Kevin Wilcox (verified owner)

    Very happy with the upper. Had to make a small adjustment to trigger assembly but very minor. Had big problems with usps shipping at no fault to bkf. I will definitely buy again but will definitely ask about other shipping methods

  12. Toby R. (verified owner)

    Fit on my lower perfectly. Finish is great.

  13. William S. (verified owner)

    Great product and purchase was easy. With quick notification of new arrival on products. My 4th purchase and site is easy to navigate. Just wish there wasn’t such shortages of products.

  14. Matt (verified owner)

    Fast shipping and fit my lower perfectly. Recommend BKF to anybody and I like that I’m supporting a fellow vet.

  15. Anonymous (verified owner)

    Great Job! Very easy process and arrived quickly.

  16. Anonymous (verified owner)

    Love this upper i got from BKf. Well assembled using quality parts

  17. Anonymous (verified owner)

  18. Nicholas King (verified owner)

  19. Jason Costa (verified owner)

    Quick shipment and high quality item. I’m very happy with purchase.

  20. Timothy B. (verified owner)

    Quick and easy. Any problems they are always ready and willing to help

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