Ballistic Advantage 9mm 4.5 Inch Barrel – Straight Profile with 1/2×28 Threads

Super-Shorty AR-9 Barrel for Defensive Pistols

Specialized for personal defense AR-9 builds, this barrel’s length is a mere 4.5 inches, including the barrel extension.  The length is equivalent to most standard full-size handguns, so the ballistic performance is similar.  That means you gain incredible handling with your AR, with a short, stiff barrel that is perfect for mounting a suppressor or flash can.

• Designed to work with both Colt/RR and Glock style AR builds.
• Straight profile barrel reduces weight and maintains high accuracy.
• Compatible with standard mil-spec uppers. There are also numerous dedicated 9mm upper options that work.
• Requires the use of a unique magwell conversion (Colt/Rock River style) with UZI mags or a dedicated 9mm lower with Glock mags.
• 9mm on an AR15 platform operates by blowback and does not need a gas block or gas tube.
• Integrated feed ramp and barrel extension.

Since the “barrel extension” is an integral part of the barrel, the length stated is the true overall length. For example, an 11” 9mm barrel has the same outer dimensions/length as a 10.5” 5.56 barrel.

Before installing a muzzle device, ensure a 9mm round will drop freely through the muzzle device bore.

Additional Info

• Length: 4.5″
• Material: 4150 Chrome Moly Vanadium
• Profile: Pencil
• Finish: QPQ Corrosion Resistant (Nitride)
• Gas System Length: Blowback
• Gas Block Journal: Blowback Gas System – No Gas Block
• Twist Rate: 1:10 inches
• Muzzle: 1/2×28 Threads
• Weight: 8.1 oz
• Other Info: No

About Ballistic Advantage

Ballistic Advantage manufactures quality AR barrels that exceed the most rigorous customer demands. These AR-15 barrels surpass the competition in accuracy, precision, and beautifully contoured aesthetics.

Their engaged team of engineers and machinists continually innovate and improve design to enhance performance. From the popular 16″ AR barrels to all other lengths and styles, Ballistic Advantage barrels enhance any quality AR-15 build.

From the moment you unwrap a Ballistic Advantage barrel, as you configure it with your receivers and handguards, and as you fire it on the range or in the field, you will experience the unique elegance and uncompromising quality crafted into every barrel.

Sub-MOA Guarantee

Buying a Ballistic Advantage barrel means guaranteed accuracy. All Ballistic Advantage barrels are guaranteed to give Sub-Minute-of-Angle (MOA) accuracy with match grade ammunition.

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.