BKF AR15 10.5″ 300 BLK DRP Profile Pistol Length 4150 CMV 1/7 Twist Barrel W/ Pinned Gas Block

(3 customer reviews)

$218.49 $129.99

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SKU: BKF-10.5-300-BARREL Categories: , , ,


This BKF 300 Blackout chambered 10.5 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 10.5″
Material 4150 Chrome Moly Vanadium
Profile DRP (Distinct Rigid Profile)
Finish QPQ Corrosion Resistant
Gas System Length Pistol
Gas Block Journal .750″
Twist Rate 1:7 inches
Muzzle 5/8×24 Threaded
Weight 22oz w/ Gas Block

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.

Additional information

Weight 2 lbs
Dimensions 20 × 2 × 2 in

3 reviews for BKF AR15 10.5″ 300 BLK DRP Profile Pistol Length 4150 CMV 1/7 Twist Barrel W/ Pinned Gas Block

  1. ageuchi9 (verified owner)

    AWESOME BA as far as attention to detail. I am very impressed with the fit and finish, and the gas block pin ensures that sucker isnt coming loose. A+++!

  2. Jordan K. (verified owner)

    barrel looks nice, haven’t finished build yet so can’t comment on accuracy yet

  3. Jinkx (verified owner)

    Ok, you ready for this?
    Just finished my build after 3 years after autistic levels of research, purchasing and assembling parts.

    Hard to find a 1:7 twist 10.5″ barrel for some reason. 1:8 twist is questionable for stability of subsonic loads and suppressors FYI. Cost was not an issue/concern with my build, as it will be an SBR in a family trust with Geissele parts and Aimpoint Micro H-1 on a Larue LT660 mount (1.64″ to center of bore fyi). I decided just out of sheer curiosity to give this barrel a try thanks to ageuchi9’s review above. He wasn’t kidding, REALLY nice barrel and quality is immediately apparent from finish to machining.

    Range Results:
    Just got back from the indoor range for initial function test, and 100% flawless performance, and completely satisfactory accuracy. It shoots better than I can with a red dot, that’s for sure.

    Optic Zero info:
    I zero’d the Aimpoint H-1 to be 1.3″ low at 25 yards. According to Hornady ballistic calculator this gives best POA results up to 130 yards with the load mentioned above.

    Load Data:
    I loaded my own supersonic loads (125gr Hornady SST, 18gr of H110, OAL 2.100).

    Bottom Line:
    Outstanding performance!!! Will perhaps update this review once I stretch out it’s legs to 50 yards. I would purchase this barrel or another BKF barrel in a heartbeat. The barrel profile was also attractive and well thought out, AND it is cross milled for a gas block pin. I just wish it was also dimpled for one or both of the set screws.


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