FN SCAR 16 – 6.5 Grendel

Description

FN SCAR 16 6.5 Grendel Custom Barrel

We make this FN SCAR 16 barrel in 6.5 Grendel. You can pick your barrel steel, twist, length, muzzle finish, fluting, and Cerakote color below.

Why 6.5 Grendel?

6.5 Grendel uses a compact cartridge case and 6.5mm bullets. One reason people compare it with .223/5.56 is that many 6.5mm bullet designs are built to retain their speed and handle wind well. The exact differences depend on the ammunition you’re comparing.

It’s also a different cartridge from 6.5 Creedmoor. The names sound alike, but the ammunition is not interchangeable. Grendel ammunition can be harder to find than .223 or 5.56, and the complete SCAR assembly needs to be right for the chambering. Ask us if you’re unsure what your build requires.

Customize your FN SCAR 16 barrel

Here’s what you can choose for this barrel:

• Barrel steel and twist: Choose chrome-moly (CM) 1:8, stainless steel (SS) 1:8, or Lothar Walther stainless steel 1:8.
• Barrel length: 10.5 to 20 inches.
• Muzzle: Target crown or 5/8×24 threads.
• Fluting: Choose six-groove, spiral, diamond, or none for a smooth barrel. Some profiles limit fluting choices.
• Cerakote: Pick a finish color from the swatches shown on the page.
• Gas block and barrel extension: Choose new components or tell us which complete assembly you’re sending in. The guide below explains the difference.
• Conversion bolt: There’s also an optional caliber-conversion bolt selection. Ask us about the required components if you’re unsure.

Before You Order

• Check your rifle: This is a 6.5 Grendel barrel for the FN SCAR 16.
• Double-check your choices: Barrel steel, length, muzzle finish, fluting, and Cerakote. This is a custom-made order.
• Assembly option: Choose new components or tell us which complete existing assembly you’re sending in. See below.

Barrel Options Explained

CM and SS: CM is chrome-moly steel, which needs protection from rust. SS is stainless steel. It resists corrosion better but still needs care.

Twist rate: 1:8 means one full rifling turn every eight inches. It describes the rifling, not the overall barrel length.

Target crown or muzzle threads: A target crown is an unthreaded muzzle finish. The 5/8×24 choice has external threads.

Fluting: Grooves along the outside of the barrel. Select None for a smooth barrel where offered.

Cerakote: A colored protective coating. Choose from the finishes shown above.

What Do the Gas Block and Barrel Extension Do?

Gas block: The gas block is part of the SCAR’s piston operating system. It directs a portion of the gas from a fired round into that system, while the gas regulator controls how the gas is managed.

Barrel extension: This is the steel component at the rear of the barrel where the bolt locks into place. It’s an important part of the completed barrel assembly, not just a mounting piece.

What’s Different About Deadshot’s Gas Block?

Traditional FN SCAR gas-block configurations can include a folding front sight. Our gas block has a cleaner, sleeker shape without that integrated sight, leaving you free to choose your own sight setup.

Our design retains SCAR-style adjustable gas regulation and is made for suppressed and unsuppressed use. We have tested our design with a variety of suppressors. If you have questions about a particular suppressor or handguard, reach out to us before ordering.

Gas Block and Barrel Extension: Which Option Do I Choose?

Choose the option that fits your order:

• Build with new components: We supply a new gas block and barrel extension. You don’t need to send us an assembly.
• Submit your Deadshot Barrels assembly: Send your existing Deadshot SCAR assembly intact so we can evaluate and reuse its components. No extra component charge for this option.
• Submit your FN barrel assembly: Send your original FN SCAR assembly intact so we can evaluate and reuse its components. The extra fee appears in the dropdown.

Sending an assembly? Include your invoice number and follow the shipping instructions in the acknowledgment on the order form. Leave the assembly intact.

There’s an optional caliber-conversion bolt choice. Contact us if you aren’t sure what your assembly needs.

What Happens After You Order?

1. We use the options you selected. If you need to correct anything, contact us as soon as possible.
2. Allow time for production. The current estimate is 3–8 weeks, not a guaranteed delivery date.
3. Need an update? Contact us with your order number.

Common Questions About This Barrel

Questions Before You Order?

Not sure about your SCAR 16 6.5 Grendel options? Email us about this barrel or use our Contact page.

Returns and warranty

Shipped barrels are final sale for discretionary returns. A 15% cancellation fee applies after work has started. We evaluate manufacturing-defect concerns under our warranty. Review our Refund Policy and Terms of Service for complete details.