Home > DEPARTMENTS > Brands > Ballistic Advantage >

Ballistic Advantage 8.5" Barrel (300 Blackout)

Ballistic Advantage 8.5" 300 Blackout Modern Series Barrel

MSRP $155.00
SALE PRICE: $139.95
Savings: $15.05
Price Flag  

Stock Status :(Out of Stock)

Product Code: BABL300003M


Ballistic Advantage 8.5" Barrel (300 Blackout) Modern Series

This .300 Blackout chambered 8.5" inch Performance Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish.

Ballistic Advantage creates every barrel as if it was their responsibility to honor the blank's full potential. They have long produced some of the best finished barrels available in the industry. For years they've provided barrels for several top tier AR15 manufacturers in the market and have only recently began to offer their products to the end user at an economical price. You no longer have to wait 6+ months to own a precision made and combat proven barrel. Buy with confidence and build your dream AR15 today!

Quench Polish Quench (QPQ) is a specialized type of nitrocarburizing case hardening that increases corrosion resistance. It is sometimes known by the brand name of Tufftride, Tenifer or Melonite. QPQ is a huge improvement over Chrome Lined barrels. Unlike chrome lining, where the chrome is built up on the surface, QPQ converts the surface without the risk of dimensional build up. The technique is used when two or more of the following properties are required in a work piece:

  • wear resistance
  • corrosion resistance
  • lubricity
  • fatigue strength


  • Length - 8.5"
  • Material - 4150 Chrome Moly Vanadium
  • Profile - DRP
  • Finish - QPQ Corrosion Resistant
  • Gas System Length - Pistol
  • Gas Block Journal - .750"
  • Twist Rate - 1:7 inches
  • Muzzle - 5/8x24 Threaded
  • Weight - 18oz
  • Other Info - No

All NFA/ATF Rules Apply

Depending on your state and local laws, you could use this barrel with a lower receiver that is a Registered SBR, or Pistol. Possession of this barrel along with a Non-NFA lower receiver may be Prohibited. We are not lawyers and the above information is not legal advise. Make sure you understand the most up to date federal, state and local laws before proceeding with this product.

Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 5 Write a review »

  0 of 0 people found the following review helpful:
5 of 5 Best price on the net March 27, 2018
Reviewer: Jaime Williams from Dayton, OH United States  
On top of the amazing customer service I received, the price couldnt be beat. Shipping was a bit slow, but there was a clear and explained warning before I ever got to checkout claiming a week delay.

Was this review helpful to you?

  1 of 1 people found the following review helpful:
5 of 5 Outstanding July 15, 2017
Reviewer: Rob K  
Picked this up for a new suppressed SBR upper build. Paired with a SiCo Omega )slid under a 12" Aero enhanced rail) this barrel and suppressor combo makes for ~15" of barrel+supp length, perfect for what I was looking for.

When I received the barrel I was surprised to see it was marked as being 5R rifled, which is not mentioned in the specs. Bonus!

I've had it out to the range 3X now and have to say it is outstanding. Shooting irons this morning at the 100Y bench with 220gr SMKs I picked up two sub-2 MOA groups with my backup irons (YHM QDS). With my old MKI eyeballs that is both surprising and very pleasing.

Nice tight fit in the Aero M4E1 receiver, good threading, and alignment rod showed perfect alignment from the barrel to suppressor dead center.

Sale price was stupidly good. Great sale RTB!

And, of course, RTB is an excellent vendor.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
5 of 5 8.5" Ballistic Advantage 300aac blackout barrel February 28, 2017
Reviewer: John Martinez from Virginia Beach, VA United States  
Great high quality barrel that shoots straight as a tack.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
5 of 5 Good stuff April 10, 2016
Reviewer: Mike Vandergriend from Chattanooga, TN United States  
Bought this barrel for my latest pistol build. Have yet to shoot it but installed well. Fits tight in my reciever and fit and finish is top notch. Always use ballistic advantage barrels for my builds, excellent product at an outstanding price thanks to right to bear.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
5 of 5 8.5" 300blackout November 26, 2015
Reviewer: Randy Annunziata from Ellijay, GA United States  
Great looking barrel, fast shipping!  Spend your money  here.

Was this review helpful to you?

Browse for more products in the same category as this item:

DEPARTMENTS > Brands > Ballistic Advantage
AR15 Parts > Barrels
AR15 Parts > Barrels > 300 BLACKOUT BARRELS
Specials > Free Shipping Products
AR15 Parts > Barrels > 300 BLACKOUT BARRELS > PISTOL / SBR BARRELS - .300 BLK
Pistol Braces / Parts