AR-15 6.5 Grendel 18" Nitride Upper – HBAR Barrel, Slim M-LOK Rail

18" 6.5 Grendel Nitride Upper: Specs

Enhance your AR-15 with the 6.5 Grendel 18" Nitride Upper Assembly, built for precision, power, and versatility. This upper is chambered in 6.5 Grendel Type 2, offering superb performance for a variety of shooting applications, from long-range target shooting to tactical and hunting purposes. With its 18" barrel, 1:8 twist, and midlength gas system, this upper assembly provides the accuracy and reliability you need.

Key Features & Benefits:

• Caliber: 6.5 Grendel Type 2, perfect for long-range precision shooting and hunting.
• Barrel Length: 18" non-fluted 4150 steel black nitride barrel, providing an ideal balance between velocity, accuracy, and durability.
• Barrel Profile: HBAR barrel profile with hardened 26-32 RC and stress-relieved construction for superior strength and performance.
• Twist Rate: 1:8 RH twist ensures excellent stabilization for 6.5 Grendel projectiles for consistent, accurate shots.
• Barrel Threading: Threaded 5/8x24 for compatibility with a wide range of muzzle devices.
• Gas System: Midlength gas system with a .750 low-profile gas block for smooth cycling and reliability.
• Upper Receiver: A3 flat top upper receiver made from certified 7075-T6 aluminum forgings, black hardcoat anodized to Government specs. Includes a forward assist and dust cover for enhanced functionality.
• Handguard: 15" M-Lok free float rail, made from aircraft-quality aluminum, and hard coat anodized for a lightweight, durable, and customizable platform for mounting accessories.
• Muzzle Device: Includes an Triport muzzle brake for recoil control and flash suppression.

Detailed Specifications:

• Caliber: 6.5 Grendel Type 2
• Barrel Length: 18"
• Barrel Material: 4150 Steel, Black Nitride Coated, Non-Fluted
• Barrel Twist: 1:8 RH for projectile stabilization
• Barrel Thread Pitch: 5/8x24, compatible with various muzzle devices
• Gas System: Midlength for smooth operation
• Gas Block: .750 low-profile steel gas block
• Handguard: 15" M-Lok free float rail for versatile accessory mounting
• Upper Receiver: AR-15 A3 flat top, made from 7075-T6 aluminum, black hardcoat anodized finish
• Muzzle Device: Triport muzzle brake
• BCG and Charging Handle: Not included, available separately
• Weight: Approximately 4.5 lbs (varies with configuration)

Important Notes:

• Barrel Compatibility: This barrel is compatible with .136" face depth bolts. It will not work with standard 7.62x39 bolts.
• No BCG or Charging Handle: These components must be purchased separately for assembly.

Why Choose the 6.5 Grendel 18" Nitride Upper Assembly?

The 6.5 Grendel 18" Nitride Upper Assembly is designed for shooters seeking both high performance and durability. With an 18" barrel, 1:8 twist, and midlength gas system, this upper offers superior stability, velocity, and smooth cycling, making it ideal for precision shooting, hunting, and tactical use.

The slim 15" M-Lok free float handguard ensures you can easily customize your setup with optics, lights, grips, and more. The A2 flash hider helps minimize muzzle rise and flash, offering better control during rapid follow-up shots.

Whether you're hunting medium to large game or engaging in long-range target shooting, this upper will meet your needs for accuracy and reliability, all while maintaining a sleek and lightweight design. Images may not be an exact representation of the product.

FAQ

Do I need a special bolt and magazines for 6.5 Grendel?

Yes. 6.5 Grendel needs a Grendel-specific bolt carrier group with the larger Grendel bolt face and 6.5 Grendel magazines. A standard 5.56 BCG and magazines will not work, but your mil-spec AR-15 lower will.

Is a bolt carrier group included?

No. Add a 6.5 Grendel BCG; it is available as an add-on on this page.

What twist rate and chamber does it use?

A 1:8 twist barrel chambered for 6.5 Grendel Type II, which stabilizes the long, high-BC 6.5mm bullets the cartridge is known for.

Related: 6.5 Grendel AR-15 uppers · 6.5mm suppressors · all AR-15 upper assemblies