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.

The BKF AR15 M4 MOD-1 Rail M-LOK series provides an alternative aesthetically progressive design that is lightweight with our 7075-T6 Steel barrel nut and attach method. The innovative attachment of the rail and the barrel nut provides a solid lockup, a seamless, strong joint that requires no timed alignment to the barrel nut itself. All BKF M4 MOD-1 rails (and receivers for that matter) are designed with pocketed cutouts to further minimize weight. In addition, BKF M4 MOD-1 rails offer QD mounting at the rear 3,6 and 9 O’clock of the handguard.

Includes:

• BKF M4 Assembled Upper Receiver w/ T-Marks
• BKF AR15 MOD-1 15″ M-LOK Handguard
• BKF  18″ 4150 SPR Nitride Barrel, 5.56 Nato, Rifle Length Gas System w/ 1:7 Twist
• BKF 750 Low Profile Gas Block and Rifle Length Nitride Gas Tube
• BKF A2 Flash Hider
• Product comes assembled
• No BCG or Charging Handle

BKF M4 Assembled Upper Features:

• M4 Feedramps
• 7075-T6 aluminum
• .250 takedown pin holes
• Laser engraved T-marks
• Type 3 Hard Coat Anodizing
• Made in the USA
• Forward assist and dust cover installed

• Made from U.S.A. sourced 6061 Extrusion
• U.S.A. sourced 7075-T6 Steel barrel nut as standard
• M-LOK mounting solution
• Mil-Spec hardcoat black anodized (Type III, Class 2)
• Free floating design
• QD mounts on rear 3,6 and 9 o’clock positions
• 1.3” Internal Diameter
• 15” Rail with Aluminum nut and hardware (weight 10oz)

BKF AR15 18″ 5.56 Nato Rifle Length Nitrided SPR Barrel Features:

This 5.56 chambered 18 inch barrel is machined from 4150 Steel with a QPQ corrosion resistant finish.

Additional Info

Length – 18″

Material – 4150 Chrome Moly Vanadium

Profile – SPR

Finish – QPQ Nitride

Gas System Length – Rifle

Gas Block Journal – .750″

Twist Rate – 1:8 inches

Muzzle – 1/2×28 Threaded

Weight – 40oz

Other Info – HP and MPI Tested

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-M4M0-18-556-SPR-15