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Helix 6 Precision Carbon Fiber 18in 6.5 Grendel Rifle Barrel 264cal 0.875GB 1-8 Twist 5/8-24 Black

Helix 6 Precision · Barrels

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Helix 6 Precision Carbon Fiber 18in 6.5 Grendel Rifle Barrel 264cal 0.875GB 1-8 Twist 5/8-24 Black

Best price

$949.99at OpticsPlanet

Out of stock Sale checked Oct 28, 2026

Buy at OpticsPlanet

Fits and works with

Caliber
6.5 Grendel · Shop matching ammo
Bolt
6.5 Grendel / 6mm ARC · Bolt carrier groups
Gas system
Rifle · Handguards
Muzzle thread
5/8x24 · Muzzle devices
Barrel length
18" · Handguards

Specifications

Manufacturer
Helix 6 Precision

Compatibility

Caliber
6.5 Grendel
Gas system
Rifle
Gas block journal
.875
Muzzle thread
5/8 x 24
Platform
AR-15

Dimensions and weight

Barrel length
18"
Weight
33 oz (2.1 lb)

Materials and features

Twist rate
1:8
Barrel steel
Carbon fiber wrapped
Color
Black

Where to buy

StorePriceAvailabilityBuyAdd to build
OpticsPlanet $949.99Salechecked Oct 28, 2026 Out of stock Buy at OpticsPlanet

Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.

Similar barrels in stock

This part is out of stock at every store we track. These similar barrels are in stock, with today's prices.

Price history

Lowest in-stock price in the last 30 days: $719.99 at OpticsPlanet. Dashed line = out of stock. Tracking since Oct 12, 2026.

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OpticsPlanet—$719.99$949.99

Since Oct 12, 2026.

About this part

The Helix 6 Precision Carbon Fiber 18in 6.5 Grendel Rifle Barrel 264cal 0.875GB 1-8 Twist 5/8-24 Black is an 18" 6.5 Grendel barrel from Helix 6 Precision with a rifle gas system. One store lists it, OpticsPlanet at $949.99. The lowest in-stock price in the last 30 days was $719.99 at OpticsPlanet.

From the manufacturer

Helix 6 Precision Carbon Fiber 18in 6.5 Grendel Rifle Barrel 264cal 0.875GB 1-8 Twist 5/8-24 Black. These Rifle Barrels from the innovators at Helix 6 Precision feature increased thermal dissipation which cools your firearm off faster and more efficiently for quicker follow up rounds. With harmonic dampening a Helix 6 Precision AR Barrel offers better accuracy than ever before. Live up to the highest demands with the highly capable Helix 6 Precision AR Rifle Barrel. You expect nothing but the best. Never compromise. Specifications for Helix 6 Precision Carbon Fiber Barrel for 6.5 Grendel AR Rifle: Manufacturer: Helix 6 Precision Color: Black Finish: Hardcoat Anodized Fabric/Material: Stainless Steel Type 416R Carbon Fiber Caliber: 6.5mm Grendel Barrel Length: 18 in Gas System Length: Rifle Length Gas Block Journal Size-Diameter: .875 in Barrel Twist Rate: 1-8 Gun Make: AR Platform Weight: 33 oz Additional Features: 33 oz Condition: New Gun Type: Rifle Firearms Threads Per Inch: 5/8x24 Projectile Caliber: .264 Caliber Features of Helix 6 Precision Carbon Fiber Barrel for 6.5 Grendel AR Rifle Increased Accuracy - Exceptional accuracy from Helix 6 Precisions proprietary carbon wrap process; Thermal Dissipation - Increased thermal cooling due to high carbon/low resin ratio; Lightweight - 50percent lighter than a steel barrel of equal contour; Harmonic Dampening - Unique carbon layup design dampens barrel harmonics for better accuracy; Stainless 416R rifled cores - Proven to provide the most uniform bore for match grade accuracy; Hand Lapped Bore - To reduce fowling and increase accuracy Package Contents: Helix 6 Precision Carbon Fiber Barrel for 6.5 Grendel AR Rifle Helix 6 Precision AR-65G8-18R: Carbon Fiber 18in 6.5 Grendel Rifle Barrel 264cal 0.875GB 1-8 Twist 5/8-24 Black

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$949.99 at OpticsPlanet
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