FN SCAR 16 – 300 BLACKOUT

Description

FN SCAR 16 .300 Blackout Custom Barrel

We make this FN SCAR 16 barrel in .300 Blackout. Here’s a little background on the chambering and what the barrel specifications mean.

Why .300 Blackout?

.300 Blackout, or .300 BLK, is a separate cartridge from .223 Remington and 5.56 NATO. Some cartridge cases may look similar at first glance, but .300 Blackout ammunition does not belong in a .223 or 5.56 chamber. Always check the ammunition and barrel markings carefully.

You’ll see two common descriptions on .300 Blackout ammunition: supersonic and subsonic. Those simply tell you whether the bullet travels faster or slower than the speed of sound. They’re different types of ammunition for the .300 Blackout chambering, not separate chamber names. Function and ammunition suitability depend on the complete firearm and the ammunition manufacturer’s guidance.

Customize your FN SCAR 16 barrel

Here’s what the barrel options mean:

• Barrel steel and twist: Stainless steel (SS) options for this chambering include 1:5, 1:7, and 1:8 twist specifications.
• Barrel length: 10.5 to 16 inches.
• Muzzle: Target crown or 5/8×24 threads.
• Fluting: Six-groove, spiral, diamond, or none for a smooth barrel, depending on the barrel profile.
• Cerakote: Choose your finish color from the available color samples.
• SCAR assembly: Choose new components or tell us which complete assembly you’re supplying. The explanation below covers each choice.

Before You Order

• Check your rifle: This is a .300 Blackout 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

SS: Stainless steel resists corrosion but still needs normal care.

Twist rate: The 1:5, 1:7 and 1:8 options tell you how many inches the rifling travels per full turn. 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.

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 .300 Blackout 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 and address covered issues through an appropriate remedy. See our Refund Policy and Terms of Service.