Ballistic Advantage 18″ 6.5 Grendel Premium Black AR15 Barrel – Rifle – SPR Profile


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AT3™ Low Profile Steel Gas Block + Gas Tube + Roll Pin Combo

AT3™ Low Profile Steel AR 15 Gas Block + Gas Tube + Roll Pin Combo - .750 - Rifle


6.5 Grendel and 6mm ARC Bolt Carrier

AT3™ AR-15 Bolt Carrier Group – 6.5 Grendel Type II – Nickel Boron


BA 18 Inch 6.5 Grendel SPR QPQ Rifle Barrel

Upgrade your AR15 by switching to the cutting-edge 6.5 Grendel caliber and flawless engineering of the Ballistic Advantage 18 Inch 6.5 Grendel SPR QPQ Rifle Barrel. Converting your AR15 easily to 6.5 Grendel is quick and convenient with a bolt and barrel conversion.

Originally developed for Special Operations, the 6.5 Grendel uses an AR15 upper receiver to give users a bigger bullet with better long-distance ballistics. Ballistic Advantage took this a step further and developed 6.5 Grendel barrels with unique profiles and twist rates ideal for the cartridge to truly excel.

Ballistic Advantage is committed to making the kind of barrels that delight the most demanding users. Users expect a barrel that delivers round after round consistently, accurately, and with minimal recoil. The barrel provides true and reliable performance no matter how hot the action or how gritty the conditions are.

6.5 Grendel

The 6.5 Grendel is a low-recoil, long-range cartridge explicitly designed for the AR-15 platform. Noted for impressive ballistics, it uses .264 caliber bullets to make accurate shots out to 1,000 yards.  The 6.5 Grendel uses a unique bolt and caliber-specific magazine to convert any standard AR15.

The 6.5 Grendel is a top choice for hunting medium-game or extended-range target shooting.

SPR Barrel Profile

A rifle length gas system, 18″ barrel length, and the Special Purpose Rifle (SPR profile) make recoil smooth and ideal for tactical applications. The Special Purpose Rifle was developed to give operators a weapon to fill multiple roles such as a close-quarters weapon and long-range precision weapon.

Ballistic Advantage’s SPR Profile is made with a profile that steps down in diameter with the muzzle being the thinnest part of the barrel. This unique design saves weight where possible while making areas such as the chamber and gas block area reinforced for accuracy and heat mitigation.

Additionally, this barrel is precision machined from 416R Stainless Steel with a QPQ Corrosion Resistant Finish. Stainless steel is easy to clean and maintain and resistant to the elements. QPQ is a corrosion-resistant finish against rust, general wear and scratches, and other factors that may lead a barrel to become prematurely unserviceable.

The Ballistic Advantage

Ballistic Advantage excels at barrel production and pays attention to the small details that make them a step above the rest. Details include nickel boron-coated feed ramps, incredible quality control, and a sub Minute of Angle (MOA) accuracy guarantee with match-grade ammunition. Stainless Steel material makes this barrel easy to clean and resistant to the elements.

Ensuring the best in quality and accuracy, Premium Series Barrels are MPI-tested and top-of-the-line for new shooters and professionals alike.


  • Brand: Ballistic Advantage
  • Model: Ballistic Advantage 18″ 6.5 Grendel Premium Black AR15 Barrel – Rifle – SPR Profile
  • Manufacturer Part Number: BABL65G003PQ
  • Length: 18″
  • Material: 416R Stainless Steel
  • Finish: QPQ Corrosion Resistant
  • Profile: SPR
  • Twist Rate: 1:8″
  • Gas System Length: Rifle
  • Gas Block Journal:  .750″
  • Threading: 5/8×24
  • Weight: 39.3 oz


Caliber6.5 Grendel Type II
Barrel Length18 inches
Barrel Twist Rate1:8 inches
Barrel Material416 Stainless
Muzzle Threads5/8/2024
Barrel FinishBlack Nitride
Gas Block Size.750″ Gas Block
Barrel ProfileSPR
Barrel Gas SystemRifle
Gas Block Journal Length1.9 inches
Barrel ExtensionM4
Weight39.9 ounces

Have Questions About this Product?

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

Ballistic Advantage Warranty!

If for any reason you have a warranty issue with one of our products, please describe your situation, include your name and order number or transaction ID. One of our technical specialists will then review your claim and contact you within 5-7 business days.

PLEASE NOTE: We cannot provide warranty work if your items have been altered by you or anyone other than Ballistic Advantage from their original state.

Please call 407-347-4584 if you have any questions regarding this policy.

Disclaimer: Manufacturer’s warranty is subject to change without prior notice.