NEW PRODUCT!!

Posted by WADE C on May 30th 2025

NEW PRODUCT!!

New Product Spotlight: 18" Ballistic Advantage 6mm ARC SPR Barrel

At Ally Munitions, we don’t add anything to our product line unless it meets our standards—not just the manufacturer’s claims. That’s why we’re excited to officially release the Ballistic Advantage 18" 6mm ARC Premium Fluted SPR Barrel to our customers.

This isn’t just another spec sheet drop—it’s a barrel that’s been fully tested, inspected, and proven in-house before earning a place on our shelves.

Why the 18" SPR Matters

The 6mm ARC continues to earn its place in precision gas guns, especially for predator hunters and DMR-style shooters who need reach, velocity, and terminal performance in a lightweight platform. While our original 16” builds set a high bar for compact utility, the 18” SPR offers something different:

  • More velocity

  • Longer dwell time for optimized tuning

  • Fluting for heat management and weight savings

  • SPR profile for stability under sustained fire

If you’re running heavier 6mm loads or planning on pushing the cartridge to its full potential at extended distances, this is the barrel to consider.

Full Spec Rundown

  • Length: 18"

  • Caliber: 6mm ARC

  • Material: 416R Stainless Steel

  • Twist Rate: 1:7

  • Profile: SPR Fluted

  • Gas System: Rifle-Length

  • Gas Journal: 0.750"

  • Gas Port Size: 0.098"

  • Muzzle Thread: 5/8x24

  • Feed Ramps: M4

  • Finish: Stainless Steel

  • Chambered & Headspaced by Ballistic Advantage

In-House Inspection: No Compromises

Like all barrels we sell, this one doesn’t go out the door without a full QC pass:

  • Bore scoped for uniformity and tool mark inspection

  • Headspaced using BCGs we stock

  • Gas port gauged for proper diameter

  • Crown & thread inspected

  • Feed ramps checked

  • Visual & dimensional inspection logged

You’ll find your inspection report at the bottom of your box—don’t toss it with the packing material. We recommend opening the barrel packaging carefully, as the included gas tube is wrapped inside.

Real Testing, Not Just a Stamp

We ran a three-barrel sample lot through our standard test cycle. Accuracy was consistent with what we’ve come to expect from BA’s Premium Series—1 MOA or better, with a variety of factory loads. From Hornady 103 ELD-X to 105 BTHP offerings, this barrel grouped well and showed no signs of premature throat wear or gas system inconsistency.

We’ll be publishing full ammo compatibility data and chronograph results soon. You’ll also catch the full breakdown on the Texas Predator Hunting Podcast, where we’ll go deep on how this barrel performed under suppressed and unsuppressed setups.

Best Use Cases

This barrel is a strong choice for:

  • Predator hunters wanting to stretch the legs of 6mm ARC

  • SPR/DMR builds where balance and accuracy matter

  • Suppressed rifles that benefit from the longer dwell time of a rifle-length gas system

  • Reloaders tuning for velocity, especially with 100+ grain bullets

We recommend pairing this with a Superlative Arms adjustable gas block, a CMC or BA bolt carrier, and our flat wire spring + heavy buffer setup for the smoothest operation.

Final Thoughts

Ballistic Advantage continues to impress, especially at this price point. This barrel fills an important gap between utility and precision and gives you real performance without breaking the bank.

Whether you're running suppressed or not, dialing in reloads or sticking with factory ammo, the 18" SPR 6mm ARCbrings reliable performance, flexibility, and accuracy to the table.

Better Comes Standard—and this barrel proves it.