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 Assembled Upper Receiver w/ T-Marks
• Geissele Super Modular Rail MK4 9.3″ M-LOK Handguard
• BKF AR15 10.5″ 5.56 Govt Profile Carbine Length 4150 CMV 1/7 Twist Barrel W/ Pinned Gas Block
• Pinned .750″ Low Profile Nitride Gas Block and Carbine Length Gas Tube
• 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

Handguard Features:

The Super Modular Rail (SMR) MK4 M-LOK™ is Geissele’s ultra-rugged M-LOK option. These rails are purpose-built and feature integrated M1913 picatinny rail sections at the fore of the rail in the 3, 6 and 9 o’clock positions. Maximum venting for heat dissipation also dramatically reduces the rail’s overall weight, while maintaining its same strong and rigid platform. Utilizing Magpul’s M-LOK technology at the 3, 6, and 9 o’clock positions, as well as the upper 45 quadrants. The SMR MK4 is both versatile and modular, allowing the user to tailor their platform to his or her unique needs. The SMR MK4 also features Geissele’s proprietary 2.25″ long barrel nut. This increases the surface contact where the rail interfaces with the receiver and creates a platform that can be trusted to be straight and true the entire length of the free float rail. This increases accuracy and zero repeatability during disassembly and reassembly when performing maintenance.

HEIGHT:  2.4″

COLOR:  Black

MATERIAL:  7000 Series Aluminum

FINISH:  Type 3 Hardcoat Anodize

AVAILABLE LENGTHS:  9.3″, 10.5″, 13.5″, 15″

INNER DIAMETER:  1.35″

OUTER DIAMETER (DAQ*):  2.11″

SMR MK4 9.3″ WEIGHT: 9.3oz (11.2oz w/ barrel nut)

SMR MK4 10.5″ WEIGHT:  10.6oz (12.74oz w/ barrel nut

SMR MK4 13.5″ WEIGHT:  11.8oz (13.5oz w/ barrel nut)

SMR MK4 15″ WEIGHT:  12.8oz (15.1oz w/ barrel nut)

BKF AR15 10.5″ 5.56 Govt Profile Carbine Length 4150 CMV 1/7 Twist Barrel W/ Pinned Gas Block Features:

This BKF 5.56 chambered 10.5 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 a QPQ .750 Low-Pro gas block drilled for a 1/8″ pin which is included. This pinning insures that your gas block never comes loose once installed.

Additional Info

Length – 10.5″

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 – 20oz

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. 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-M4M0-10.5-556-9.3-MK4