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The 6mm ARC was born to reach out there, and a 20-inch barrel is where the cartridge really starts to earn its keep. This Ballistic Advantage Premium Black Series barrel is machined from 416R stainless steel with a heavy DMR contour, which is exactly the kind of setup you want when you're chasing tight groups and consistent velocity out past the point where a 5.56 runs out of gas. The extra mass under the handguard soaks up heat during longer strings, so your first shot and your fifth shot are still landing where you tell them to.
The DMR name stands for Designated Marksman Rifle, and the profile lives up to it. That heavier taper toward the muzzle resists barrel whip and holds point of impact as things warm up, which is why this contour is a favorite for precision and long-range work. Pair that with the 20-inch length and you're getting the most velocity the 6mm ARC has to offer, giving those high-BC bullets like the 103, 105, and 108 grain loads more energy and less drop downrange.
The 1:7 twist is dialed in to stabilize the heavier-for-caliber projectiles that make the 6mm ARC such a flat shooter, so you won't be limited to lighter bullets. It runs a rifle-length gas system, which is the sweet spot for a barrel this long. That longer dwell time smooths out the recoil impulse and takes some strain off the internals, giving you a softer-shooting rifle that's easier to spot your own hits with.
The exterior wears a QPQ finish for corrosion resistance and a clean matte black look, and the muzzle comes threaded 5/8-24 so you can add the brake, comp, or suppressor of your choice. The barrel extension is Nickel Boron coated with an extended M4 feed ramp, which helps feeding stay slick and reliable round after round. You'll want a 6mm ARC or 6.5 Grendel bolt carrier group and the matching magazines to finish the build.
The 6mm ARC shares its bolt face with the 6.5 Grendel, so you'll want a 6mm ARC or 6.5 Grendel bolt carrier group to run this barrel. A standard 5.56 BCG will not work because the case head and bolt dimensions are different. Match the BCG to the caliber and feeding stays reliable.
Yes. The 1:7 twist on this Ballistic Advantage barrel is set up to stabilize the heavier-for-caliber projectiles the 6mm ARC is known for, including the popular 103 to 108 grain match loads. That's exactly what you want for long-range and precision work where high-BC bullets shine.
The 20-inch length gives the 6mm ARC more room to build velocity, which means flatter trajectories and more retained energy downrange. The heavy DMR contour adds mass that resists heat and keeps point of impact steady over longer strings of fire. If your build is aimed at accuracy and distance rather than maneuverability, the 20-inch DMR is the way to go.
It does. The muzzle is threaded 5/8-24, which is the common thread pitch for 6mm and larger AR muzzle devices. That lets you mount a brake, compensator, or suppressor of your choice without any extra machining.
| UPC | 819747028662 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | BABL6MM003PQ |
| Caliber/Gauge | 6mm ARC |
| Barrel Length | 20" |
| Color | Black |
| Product Type | Barrel |
| Model | |
| Length | 20'' |
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