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BKF M4 MOD-0 16″ 5.56 Govt Profile Mid Length 4150 CMV 1/7 Twist Barrel W/ Triangle Cap FSB (No Handguard)

(25 customer reviews)

Original price was: $375.52.Current price is: $300.42.

5 in stock

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SKU: BKF-CUR-M4M0-16-556-FSB-NORAIL Categories: , , , ,

Description

This product is 100% Made in the USA! Our gas tubes, gas blocks and even roll pins are all proudly manufactured in the US. All Complete uppers are headspaced prior to shipping and test fired.

Includes:

  • BKF M4 Mod-0 Dry Film Lubed Assembled Upper Receiver w/ T-Marks
  • BKF AR15 16″ 5.56 Govt Profile Mid Length 4150 CMV 1/7 Twist Nitride Barrel W/ FSB, Triangle Handguard Cap and Delta Ring Assembly
  • BKF Mid Length Gas Tube Nitride
  • BKF A2 Flash Hider
  • Product comes assembled
  • No Handguard, BCG or Charging Handle

Standard Upper Features:

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

This BKF 5.56 chambered 16 inch Government Profile Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension. This barrel includes the front sight base (F-Marked) , Triangle handguard cap and delta ring assembly.

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 Info

Length 16″
Material 4150 Chrome Moly Vanadium
Profile Government
Finish QPQ Corrosion Resistant
Gas System Length Mid
Gas Block Journal .750″
Twist Rate 1:7 inches
Muzzle 1/2×28 Threaded
Weight 33oz w/ FSB

B. Kings Firearms barrels are manufactured by a Top Tier Barrel Manufacturer to our specifications. B. Kings Firearms barrels are made for combat and heavy duty use. We rate all of our Pinned Gas Block models for full auto use. We guarantee 1 MOA or better on all BKF barrels when used with match grade ammunition.

PRODUCT SKU: BKF-CUR-M4M0-16-556-FSB-NORAIL

Additional information

Weight 2 lbs
Dimensions 20 × 2 × 2 in
Barrel Caliber

5.56x45mm Barrel
Barrel Length

16 Inch
Barrel Gas System Length

Mid Length

25 reviews for BKF M4 MOD-0 16″ 5.56 Govt Profile Mid Length 4150 CMV 1/7 Twist Barrel W/ Triangle Cap FSB (No Handguard)

  1. Dennis Rogers (verified owner) –

    Finish and overall quality much higher than expected

  2. Clifton C. (verified owner) –

    Top quality, fit and finish is great. Upper feed ramps and barrel extension ramps are mated properly. Fast shipping as well in these trying times. I have no reservations recommending them.

  3. Garrett Clare (verified owner) –

    You and the team are great. I hope you have years of success. Please tell everyone thank you and I’ll be using you alot for my builds unless something tragic happens to the quality. Once again, thank you and beat of luck to your future

  4. Stephen (verified owner) –

    Arrived well packaged and on time. Shoots straight, and does what its supposed to do. I like the bomb proof, old school fixed front sight. My leftover mid length hand guard fit perfectly.

  5. andrew estlund (verified owner) –

  6. Anthony B. (verified owner) –

    Upon inspection of this upper the parts used are high quality noting the Aero precision upper receiver. The B.king barrel is nicely machined with a perfect finish and gas tube has a nice melonite finish. Im overall very pleased with the quality parts used in this assembly a true value at the listed price. I look forward to shooting it soon.

    My only gripes are the ‘Round’ carbine handguard cap, I assumed it would have the correct A2 triangle cap. Buyers take note the round cap is the wrong part for a midlength upper assembly and limits you drastically on handguard selection. To be correct to blue print it should be an A2 triangle style handguard cap you will be limited to magpul moe SL handguards or free float handguards. The last gripe is the assembler didn’t index the barrel nut and flash hider fully but that was an easy fix having the tools on hand to index both the Barrel nut and flash hider a few degrees to top dead center. Thanks for offering a high value product just pay closer attention to assembly details. I do imagine the errors were mostly due to being rushed to get product out due to current high sale volumes. Thank you.

  7. Elmer Santiago (verified owner) –

    Absolutely stunning barrel. Great accuracy, even after it got hot, and makes my AR pistol a bit more awesome. Thanks guys!!

  8. Daryl Lacourse (verified owner) –

  9. James Hamilton (verified owner) –

    As always, lightning fast Shipping ! Great quality and value.

  10. John S. (verified owner) –

    Fit my Aero Precision Lower Receiver like a glove. No gap, no wabble.

  11. Stanley Charlton (verified owner) –

  12. Rory Hammond Sr (verified owner) –

  13. adamepaul3078 (verified owner) –

    I bought this for a new build that is still in the process of being completed. Obviously, I haven’t had the opportunity to hit the range as of yet. The overall quality of this assembly appears to be of pretty decent quality. The 4 star rating is due to the handguard end cap being round. On a mid-length gas system most end caps are triangular. I had already ordered my handguard before I received this upper, so I’ve had to order a different set of handguards that will hopefully fit. Maybe somewhere in the description they can add that detail about have round handguard end caps. Finding aluminum mid-length drop-in handguards made for round end caps isn’t as easy as you would think. Other than that, I look forward to putting this assembly to the test once my build is complete.

  14. Steven W. (verified owner) –

    Amazing quailty for price. I now have 5 BKF uppers. All are sub MOA with M855 (62gr) ammo. Midlength gas system is the only way to go. LESS WEAR!

  15. Marcus (verified owner) –

  16. Paul (verified owner) –

    I bought this for a new build. I paired it with a Rainier BCG and Stag stripped lower with M&P parts kit and FCG. Ran a 30 round mag through it with zero issues. I am happy with the purchase. At first I was disappointed with the round handguard end cap. I had to searched and find handguards to fit a mid-length gas system with round end cap that actually looked good. All in all, I’m pleased with the upper.

  17. Mark K. (verified owner) –

    Haven’t been to the range yet but a great complete upper for the money. When I put it on my Superior Arms upper it was a nice tight fit with absolutely no play at all. I hope it shoots as good as it looks.

  18. Scott (verified owner) –

    Fantastic service all around. Thank you so much!

  19. Anonymous (verified owner) –

    Fast shipping! Great completed upper! Very happy!

  20. Mark (verified owner) –

    Excellent fit and finish for the price point.

  21. Jacob N. (verified owner) –

    I got exactly what I ordered in a timely manner

  22. Noel (verified owner) –

    By the way, I’m the one that asked if you made a retro 16″ dissipator or a 20″ A3 upper, and you referred me to this mid-length model. I own now 3 of your uppers in different configurations. There’s no other better quality and or better value than BKF AR-15’s as of 4/2022. Keep up the good work!

  23. B Rice (verified owner) –

    Had been extensively pawing over the PSA site looking at uppers for weeks and not pulling the trigger because of the horrible reviews and the questionable customer service they seemingly provide kept me from pulling the trigger and then I came across this site and knew that my search was over and immediately pulled the trigger on this awesome upper. BKF is now my go to site.

    Installed the Magpul SL handguards on this upper. Not the easiest to install but worth the extra effort.

    Thanks to all the BKF staff for the great products, excellent packing and fast shipment.

  24. Christopher (verified owner) –

  25. David A. (verified owner) –

    Excellent quality

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