Faxon Duty Series 8″, 8.6 Blackout, Pistol Length, 4150, Nitride, AR-10 Barrel

Faxon Duty Series 8″, 8.6 Blackout, Pistol Length, 4150, Nitride, AR-10 Barrel, in stock and ready to transfer. The sections below cover fitment and the legal process rather than repeating the manufacturer’s marketing.

Specifications

Type	A Rifle Barrel
SKU	GF-FAX8
Price	$200.00

What this barrel does

Barrel choice sets more of a rifle’s behaviour than any other single component. Length determines velocity, profile determines how it heats and how it hangs, and twist rate determines which projectiles will stabilise and, on subsonic designs, whether they expand at all.

Will this fit your setup

Twist rate is the specification to get right before anything else. Then check gas system length for the barrel length, chamber specification against the ammunition you intend to run, and muzzle thread pitch.

What the price reflects

At $200.00 this sits at the affordable end of the category. That usually means simpler materials or a fixed mount rather than a compromise on function.

Ordering and shipping

This ships directly to you. See our shipping and delivery page for processing times, carriers and any restrictions that apply to your address.

Keeping it working

Routine maintenance is simple: keep it free of grit, verify fastener torque now and then, and inspect for wear where parts move against each other.

See also

Browse our suppressor range, 8.6 Blackout ammunition and 300 Blackout ammunition, or work out what your setup actually delivers with the ballistics calculator.

Finish notes

A plain black finish is the most durable and the easiest to touch up, and it hides oil and carbon rather than showing it.

Coatings differ in hardness as well as colour. A pattern applied over a hard base wears differently from one sprayed onto bare alloy.

Assembly

Keep grit out of mating surfaces. Most accuracy complaints on a rebuilt rifle come from debris in a bedding surface rather than the barrel.

Key considerations

Break in advice is contested. Follow the manufacturer, since they know what their own finishing process leaves behind.

Contour decides heat behaviour and balance. Heavier profiles hold their point of impact longer in a string and hang harder off the front.

Detail worth knowing

Length trades velocity against handling. The relationship is not linear, and it is far weaker on cartridges designed around short barrels.

Gas port size and location are set for a given barrel and gas length. Changing one without the other causes cycling problems.

Experience talking

Twist rate is the specification to settle first. It decides which projectiles stabilise and, on subsonic designs, whether they expand at all.

Length trades velocity against handling. The relationship is not linear, and it is far weaker on cartridges designed around short barrels.

Gas port size and location are set for a given barrel and gas length. Changing one without the other causes cycling problems.

Frequently asked questions

Is this in stock at this price?

Yes, $200.00 is the current price and this is held stock. Prices move with supply, so the listing is the authority rather than a cached search result.

Does this come with a mount?

Mounting arrangements vary by manufacturer and model. Check the manufacturer’s specification, and tell us what host you are running if you want us to confirm before you order.

Can you ship to my state?

In most cases yes, though several states restrict these items. Check the shipping page or ask before ordering.

Does it come assembled?

Check the listing specification. Where assembly is required, follow the manufacturer’s torque figures rather than improvising.

Do I need threadlocker?

Blue grade on non structural fasteners is sensible. Avoid permanent grades on anything you may need to remove.

Will this show handling marks?

Patterned finishes hide wear better than solid colours. Both wear at contact points eventually.

How quickly does this ship?

It is held stock. Processing and carrier times are on the shipping page.

Do you ship this to my state?

In most cases yes. Some states restrict specific configurations or components, so check the shipping page or ask before ordering.

Can you check compatibility for me?

Yes. Tell us the host firearm and what you already own, and we will confirm rather than let you guess.