AR-15 6.5 Grendel 20" Diamond Fluted Stainless Upper – M-LOK, Triport

20" Diamond Fluted 6.5 Grendel Upper: Specs

Enhance your AR-15 build with the AR-15 6.5 Grendel 20" Diamond Fluted Stainless Steel Upper Assembly. Designed for precision shooting and reliable performance, this drop-in 6.5 Grendel Type 2 upper will seamlessly fit onto virtually any standard AR-15 lower assembly. Whether you're a competitive shooter or a hunter, this custom upper is built to handle the rigors of heavy-duty use while offering exceptional accuracy.

Key Features:

• 20" Diamond Fluted 416R Stainless Steel Barrel: The diamond-fluted design not only adds aesthetic appeal but also reduces weight and improves heat dissipation, allowing for longer, more consistent shooting sessions. The 416R stainless steel construction provides superior durability and resistance to corrosion. The barrel is chambered in 6.5 Grendel Type 2, offering a 1:8 twist rate, perfect for stabilizing heavier bullets commonly used in long-range shooting.
• Rifle-Length Gas System: Equipped with a .750 low-profile steel gas block and rifle-length gas tube, this system ensures smooth cycling and consistent performance, even during extended shooting sessions.
• Triport Muzzle Brake: Finished in nitride, helping to reduce muzzle flash during low-light conditions. This feature is crucial for tactical operations and hunting in varying light environments. 5/8x24 TPI.
• A3 Flat Top Upper Receiver: Constructed from 7075-T6 aluminum and hardcoat anodized to mil-spec standards, the flat top upper receiver includes a forward assist, dust cover, and M4 feedramps for reliable feeding.
• 15" M-LOK Free Float Handguard: This rifle-length handguard is designed to provide a comfortable, ergonomic grip while also offering ample space for accessories like optics, lasers, or bipods. The M-LOK system allows for easy customization while maintaining a slim profile for increased maneuverability.

Specifications:

• Barrel Length: 20"
• Caliber: 6.5 Grendel Type 2
• Barrel Material: 416R Stainless Steel (diamond fluted)
• Twist Rate: 1:8 RH
• Muzzle Thread: 5/8x24
• Gas System: Rifle-Length with Steel Low Profile Gas Block
• Upper Receiver: A3 Flat Top, Hard Coat Anodized
• Handguard: 15" Rifle-Length M-LOK Free Float Rail
• Muzzle Device: Triport (Nitride Finish)
• BCG/Charging Handle: Sold Separately (can be purchased separately)

Please Note: This barrel is compatible with .136" face depth bolts and will not work with standard 7.62x39 bolts. Please allow 3-5 weeks on ETA as these barrels are fluted to order.

Perfect for Long-Range Accuracy and Precision:
The 6.5 Grendel 20" Diamond Fluted Stainless Steel Upper Assembly is ideal for competition shooting, long-range precision shooting, and hunting. The 20" barrel delivers enhanced accuracy, while the M-LOK handguard ensures easy customization with minimal weight. Whether you're engaging targets at extended ranges or hunting larger game, this upper assembly is built to handle it all.

Crafted for tactical and competition shooters, the AR-15 6.5 Grendel 20" Diamond Fluted Stainless Steel Upper is engineered to meet the demands of precision, reliability, and performance.

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

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