Diamondback115656760
Diamondback 308 Win 16" Mid-Length Black Nitride 4150 Chrome Moly Vanadium Steel OEM Replacement Barrel$142.50
Availability: In Stock
Current Stock: Out of stock
The Diamondback 6.5 Grendel 18" barrel is a direct OEM replacement barrel built for AR-15 platforms looking to chamber the efficient, long-range 6.5 Grendel cartridge. This mid-length barrel splits the difference between velocity and handling, making it a practical choice for precision rifle builds without excessive length. The 1:8 twist rate stabilizes the full range of 6.5 Grendel projectiles, from lighter 100-grain loads to heavier match-grade ammunition.
Constructed from 4150 chrome moly vanadium steel and finished with black nitride coating, this barrel delivers durability and corrosion resistance in a no-nonsense package. Black nitride is a proven hard-coat finish in the AR world—it resists rust, handles rough handling, and maintains its dark appearance through seasons of use. The mid-length gas system keeps your rifle's recoil impulse smooth and reliable, a solid foundation whether you're assembling a hunting rifle, precision range gun, or backcountry build.
Drop-in compatibility with standard AR receivers makes this a straightforward swap for builders and gunsmiths. The threaded muzzle (5/8-24") gives you options for suppressors, brakes, or flash hiders without additional machining. If you're already running a Diamondback upper or lower, this barrel pairs seamlessly; if you're mixing components, verify your receiver and gas tube are compatible with a mid-length system.
| Caliber | 6.5 Grendel |
| Barrel Length | 18" |
| Twist Rate | 1:8 |
| Gas System | Mid-Length |
| Material | 4150 Chrome Moly Vanadium Steel |
| Finish | Black Nitride |
| Muzzle Thread | 5/8-24" |
| Type | OEM Replacement Barrel, AR-15 Compatible |
This barrel is designed as a direct OEM replacement and is compatible with standard AR-15 receivers. Verify that your receiver and gas tube are configured for a mid-length gas system before installation.
Yes. The barrel features a 5/8-24" threaded muzzle, which is the standard suppressor thread pitch for most 6.5 Grendel suppressors and muzzle devices. You'll need a suppressor rated for your desired barrel length and caliber.
The 1:8 twist rate is optimized for 6.5 Grendel ammunition across typical projectile weights used in that cartridge, from lighter target rounds to heavier match-grade bullets.
This is an OEM replacement barrel. Confirm with Diamondback's documentation or contact us if you need clarity on whether your specific build requires additional components like a gas tube or bolt carrier group.
SKU: 115730255 • Width: 1.6in • Height: 1.4in • Depth: 22in • Weight: 2.06oz
Availability: In Stock
Current Stock: Out of stock
The Diamondback 6.5 Grendel 18" barrel is a direct OEM replacement barrel built for AR-15 platforms looking to chamber the efficient, long-range 6.5 Grendel cartridge. This mid-length barrel splits the difference between velocity and handling, making it a practical choice for precision rifle builds without excessive length. The 1:8 twist rate stabilizes the full range of 6.5 Grendel projectiles, from lighter 100-grain loads to heavier match-grade ammunition.
Constructed from 4150 chrome moly vanadium steel and finished with black nitride coating, this barrel delivers durability and corrosion resistance in a no-nonsense package. Black nitride is a proven hard-coat finish in the AR world—it resists rust, handles rough handling, and maintains its dark appearance through seasons of use. The mid-length gas system keeps your rifle's recoil impulse smooth and reliable, a solid foundation whether you're assembling a hunting rifle, precision range gun, or backcountry build.
Drop-in compatibility with standard AR receivers makes this a straightforward swap for builders and gunsmiths. The threaded muzzle (5/8-24") gives you options for suppressors, brakes, or flash hiders without additional machining. If you're already running a Diamondback upper or lower, this barrel pairs seamlessly; if you're mixing components, verify your receiver and gas tube are compatible with a mid-length system.
| Caliber | 6.5 Grendel |
| Barrel Length | 18" |
| Twist Rate | 1:8 |
| Gas System | Mid-Length |
| Material | 4150 Chrome Moly Vanadium Steel |
| Finish | Black Nitride |
| Muzzle Thread | 5/8-24" |
| Type | OEM Replacement Barrel, AR-15 Compatible |
This barrel is designed as a direct OEM replacement and is compatible with standard AR-15 receivers. Verify that your receiver and gas tube are configured for a mid-length gas system before installation.
Yes. The barrel features a 5/8-24" threaded muzzle, which is the standard suppressor thread pitch for most 6.5 Grendel suppressors and muzzle devices. You'll need a suppressor rated for your desired barrel length and caliber.
The 1:8 twist rate is optimized for 6.5 Grendel ammunition across typical projectile weights used in that cartridge, from lighter target rounds to heavier match-grade bullets.
This is an OEM replacement barrel. Confirm with Diamondback's documentation or contact us if you need clarity on whether your specific build requires additional components like a gas tube or bolt carrier group.
SKU: 115730255 • Width: 1.6in • Height: 1.4in • Depth: 22in • Weight: 2.06oz