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
• Geissele Automatics 9.3″ MK4 Super Modular MLOK Rail
• BKF AR15 10.5″ 300 Blackout Pistol Length Nitrided 4150 CMV Barrel W/ Pinned Gas Block
• BKF Pinned .750 Low Profile Gas Block and Pistol Length Nitride Gas Tube
• BKF A2 Flash Hider
• Product comes assembled
• No BCG or Charging Handle
• Complete Upper weight – 2lb 4oz

BKF M4 Assembled Upper Features:

• U.S.A. sourced 7075-T6 Aluminum
• Thermal fit with oversized lugs for tight fitment with most lower receivers
• Upper receiver features M4 style feed ramps
• Forward assist and dust cover installed
• Bead blasted and hard coat anodized black (Type III, Class 2 )
• Weight: Upper 9 oz Stripped
• Made in the U.S.A.

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″ 300 BLK DRP Profile Pistol Length 4150 CMV 1/7 Twist Barrel W/ Pinned Gas Block Features:

This BKF 300 Blackout chambered 10 inch DRP (Distinct Rigid Profile) 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.

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 – 10″

Material – 4150 Chrome Moly Vanadium

Finish – QPQ Nitride

Profile – DRP

Gas System Length – Pistol

Gas Block Journal – .750″

Twist Rate – 1:7 inches

Muzzle – 5/8×24 Threaded

Weight – 20oz

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-M4M0-10-300-9.3-MK4