BKF AR15 Govt 12.5″ 5.56 Nato Carbine length 1/7 Twist Barrel W/ 11.5″ FFSSR M-LOK Handguard (Ballistic Advantage)

(29 customer reviews)

$319.99 $279.99

5 in stock


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 11.5″ FFSSR Slim Profile M-LOK Handguard
  • Ballistic Advantage 12.5″ 556 NATO Govt Modern QPQ corrosion resistant 1/7 Twist QPQ Barrel
  • Low Profile Gas QPQ Block and Carbine Length Gas Tube
  • Product comes assembled
  • No BCG or Charging Handle

Standard Upper Features:


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

Parallax Tactical FFSSR 11.5″ Slim M-LOK

  • 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!!!

Ballistic Advantage 12.5″ 5.56 Government Profile Carbine length AR 15 Barrel, Modern Series Features:

This 5.56 chambered 12.5 inch Government Profile Carbine Length Modern Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension. These barrels have a sub MOA Accuracy Guarantee!!!

Additional Info

Length – 12.5″

Material – 4150 Chrome Moly Vanadium

Profile – Government

Finish – QPQ Corrosion Resistant

Gas System Length – Carbine

Gas Block Journal – .750″

Twist Rate – 1:7 inches

Muzzle – 1/2×28 Threaded

Weight – 22oz

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 28 × 4 × 4 in

29 reviews for BKF AR15 Govt 12.5″ 5.56 Nato Carbine length 1/7 Twist Barrel W/ 11.5″ FFSSR M-LOK Handguard (Ballistic Advantage)

  1. Anonymous (verified owner)

    Nice upper.

  2. Gary (verified owner)

    The upper receiver fits perfect with my no name lower, no wiggle or slop. My firearm runs smoothly and shoots an easy 1MOA with quality ammo. I use Hornady Black 223 75 grn HPBT.
    I would not hesitate to recommend B King’s for the quality and service.

  3. menotintexas (verified owner)

    I love the quality of this upper. It has been nothing but reliable for my first shots. I have high hopes for it’s continued quality.

  4. Troy (verified owner)

    I wish I had found BKings’s Firearms 3yrs earlier. It would have saved me alot of hassle. This upper is awesome and the price unbeatable for what it is. Looking forward to buying again and shipping was fast.

  5. Deandre (verified owner)

    Bought this upper to finish up a 556 AR pistol build I was doing, loving everything about this upper. It’s everything I wanted and more. I will definitely be doing more business with B. King’s Firearms, they offer a lot of great products with great pricing. I’m doing a 308 AR pistol build this month and B. King’s Firearms is where I’m buying my upper & parts from. Beyond great customer service and fast shipping. Really appreciate what this company has to offer. Thank you for the great service!!

  6. Daniel (verified owner)

    This upper didn’t disappoint! Well made.

  7. David V. (verified owner)

    When I ordered the upper it was listed as backordered, but I ordered because of the price. To my surprise it was delivered in just over a week. Once all my parts came in I assembled the AR, went to the range today and the upper is awesome and well worth the 299 I paid. I will only buy parts for any AR’s I build in the futue from B. King’s firearms. Shipping fast and I look forward to giving you my business in the future.

  8. Craig Taylor (verified owner)

    SWEET! Build and fit & finish appear to be terrific. Have yet to shoot it. Very pleased.

  9. Robert Wolfe (verified owner)

    Very happy with the quality

  10. Mitchell Nebrosky (verified owner)

    First time buying and owning an AR and this was a great choice! I love the weight of it, the accuracy, the QD mounts built into the rails, and the rails up front but then the sleekness of it in the middle! Great price and great upper. Not one blemish, smear, nick, dent, or smudge on the thing. B. King’s knows what they’re doing, and i’ll be taking all of my business here from now on! The shipping was great! Haven’t had any problems!!

  11. Robert B. (verified owner)

    Excellent fit and finish, everything tight, not a blemish anywhere. It mates perfectly to the lower I had selected.

  12. Matthew (verified owner)

    The upper was backordered but only had to wait about two 2 weeks. It was worth the wait is upper is awesome! Couple hundred rounds so far without a problem. Really impressed with the quality for the price. Definitely my new place to shop.

  13. Jason (verified owner)

    Very nice upper. Pictures on site don’t do it justice. Fits and feels great. Great hand guard. Great service and quick delivery even though it was a backordered item. Will definitely using B. Kings again. Thanks.

  14. Philip Bracciale (verified owner)

    Shoots like a dream

  15. Andrew G. (verified owner)

    Awesome buy!! Love this upper!

  16. Carl (verified owner)

    Very nice upper. Very pleased.

  17. (verified owner)

    Very nice upper, solid construction and well-made.

  18. Andrew (verified owner)

    Excellent quality and price

  19. Garrett (verified owner)

    Shipped fast, great price. Attached to an Aero Precision pistol lower with no wobble, nice and snug fit.

  20. Alberto de Jesus Arriaga Ulloa (verified owner)

    Great quality ! Upper fit nicely with my Aero lower 👍🏻

  21. Youseth Y. (verified owner)

    Excellent service. Fit and finish was superb on the upper.

  22. MIGUEL A. (verified owner)

    Wow!!!!!, Amazing. top notch quality..

  23. Douglas (verified owner)

    Excellent fit and finish, matched my PA-15 lower in color and is a snug fit. Getting a bit better than 1 M.O.A. with 69gr BTHP Match grade ammo and using a Sig Sauer Romeo 5 red dot.

  24. Christian (verified owner)

    Quick shipping, put together well.

  25. James York (verified owner)

    I just received mine today and although i have not shot with this upper yet i can say it is very well made, fits perfect and tightly, can’t wait for range time and I’ll be carrying it on duty as my patrol rifle.
    I should’ve ordered the 10.5 inch upper because i want a great cqb upper since i do a lot of building, apartment and house searches but this should do.
    So far outstanding product.

  26. Joe (verified owner)

    Great build quality, very good barrel(especially for the price), shoots awesome.

  27. Stephen b. (verified owner)

    Assembled this upper and topped it with a basic bushnell non magnified red dot. Once zeroed it held very nice groups at 50 yds. Took it out to 100yds and was ringing 8″ steel with no problem. Zero malfunctions. Very nice upper.

  28. James York (verified owner)

    Outstanding Product, very well made snug fit to my lower receiver, fast shipping, shoots great. They are great to work with grwat customer service.

  29. Christon C. (verified owner)

    Way better than the pictures, awesome upper!

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