BKF AR15 16″ 5.56 Nato Govt 1/7 Twist Carbine Length Barrel W/ 13.5″ Slim M-LOK Rail

(2 customer reviews)


8 in stock

SKU: 16-556-13.5-SLIM-BCA Categories: , ,


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
  • BKF Slim Profile 13.5″ Slim M-LOK Handguard
  • 16″ 4140 parkerized barrel in 556 Nato W/ Carbine Length Gas system and 1:7 TWIST
  • .750 Low Profile Gas Block and Carbine Length Gas Tube
  • A2 Flash Hider
  • Product comes assembled
  • No BCG or Charging Handle

Standard Upper Features:

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

Handguard Description:

This rail features a newly designed 6061 Aluminum hard anodized barrel nut and a rugged mounting system. Utilizing 3 screws allows enhanced rock solid lockup for your rail to barrel nut interface. It also has integrated QD mounts in both the front and rear.This rail features the same Type III, Class 2 hard coat anodizing as the rest of our products that have a durable and aesthetically pleasing finish.
  • Made from U.S.A. Certified 6061 Extrusion
  • U.S.A. sourced 6061 Aluminum Barrel nut
  • M-LOK mounting solution
  • Mil-Spec hardcoat black anodized
  • Free floating design
  • Integrated Front and Rear QD Mounts
  • 1.35” Internal Diameter
  • 1-5/16” crows foot tool or premium armorers wrench recommended for installation (Not Included)
  • 9 oz

Additional Info

Caliber – 556 Nato

Barrel Length – 16″

Barrel Material – 4140 Chrome Moly Vanadium

Finish – parkerized

Profile – m4

Gas System Length – Carbine

Gas Block Journal – .750″

Twist Rate – 1:7 inches

Muzzle – 1/2×28 Threaded

Total Weight of Upper Receiver without BCG – 3lb 14oz

Additional information

Weight 3 lbs
Dimensions 28 × 4 × 4 in

2 reviews for BKF AR15 16″ 5.56 Nato Govt 1/7 Twist Carbine Length Barrel W/ 13.5″ Slim M-LOK Rail

  1. Rickie N. (verified owner)

    The upper came as advertised and delivery was quick. Once I received the upper I did a full cleaning and put a bore camera in the barrel. This upper is study and I have no doubt that I will enjoy many years of shooting with this upper. This a product that B. King can put his name on with pride.

  2. Charlie J. (verified owner)

    BKF had exactly what I was looking for in an upper, price was right on the money compared to other shops.

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