Shot Sale | Up to 30% Off! Shop Now

Diamondback Firearms 16 Inch Carbine AR 15 Barrel – 5.56 NATO – 4150 CMV QPQ

SKU: DB556C16M50B8

Out of Stock
Orders will Ship within 1 Business Day
Diamondback Limited Lifetime Warranty!
Only 1 remaining. Order now!
TOP ADD-ON'S
AT3™ Low Profile Steel Gas Block + Gas Tube + Roll Pin Combo

· AT3™ Low Profile .750" Steel Gas Block + Carbine Gas Tube Combo

$30.59

Nitride Barrel with 11 Degree Target Crown

Low cost and high value components can be hard to come by – luckily, Diamondback Firearms delivers with their barrels.  This carbine length AR-15 barrel features a corrosion resistant black nitride finish inside and out, ensuring longevity and protection from the elements.  The carbine gas system is a proven system for this barrel length, providing sufficient pressure for cycling steel case ammunition

The 1-8 twist ensures compatibility with a wide variety of ammo, from standard full metal jacket rounds for practice, to heavier match-grade loads where higher accuracy is key.  Plus, the muzzle receives an 11 degree target crown, which helps tighten groups even on a budget-friendly barrel like this one.

Specifications

  • Length: 16 Inches
  • Threads: 1/2×28
  • Gas Block Shoulder: .750″
  • Gas Port: Carbine
  • Barrel Profile: Medium
  • Twist: 1-8
  • Material: 4150 CMV Steel
  • Finish: Black Nitride/QPQ

Specifications:

Caliber5.56 NATO/.223 Remington
Barrel Length16 inches
Barrel Twist Rate1:8 inches
Barrel Material4150 CMV
Muzzle Threads1/2/2028
Barrel FinishBlack Nitride
Gas Block Size.750″ Gas Block
FitAR-15
Barrel ProfileMedium
Barrel Gas SystemCarbine
Gas Block Journal Length1.9 inches
Barrel ExtensionM4

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

Limited Lifetime Warranty

  • This “Limited Lifetime Warranty” has been drafted to comply with the MAGNUSON-MOSS WARRANTY FEDERAL TRADE COMMISSION IMPROVEMENT ACT which is effective for goods manufactured on or after December 31, 1976. DIAMONDBACK FIREARMS, LLC. warrants that this firearm was originally manufactured free from defects in material and workmanship.
  • DIAMONDBACK FIREARMS, LLC. agrees to correct any defect in material and/or workmanship for the original purchaser by repair or replacement ONLY. PROOF OF PURCHASE IS REQUIRED. A service or handling charge may be applied at the company’s discretion.
  • DIAMONDBACK FIREARMS, LLC. will not be responsible for defects resulting from careless handling, unauthorized adjustments or modifications, corrosion, neglect, abuse, failure to provide reasonable and necessary maintenance as described by this owners manual.
  • Damage caused by hand loaded and/or reloaded or improper ammunition or damage caused by firing with any obstruction in the barrel will not be warranted.
  • This warranty does not apply to ordinary wear and tear of any parts, including metal, plastic, or any other material used to manufacture this product, as well as all surface finishes.
  • Diamondback does not warranty aftermarket parts or damage or issues caused by them.
  • Under no circumstances shall DIAMONDBACK FIREARMS, LLC. be responsible for incidental or consequential damages with respect to economic loss or injury or property damage, whether as a result of a breach of an express or implied warranty, negligence or otherwise.
  • Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply in certain cases.

Illegal Configuration

Diamondback reserves the right to report illegal configurations to the ATF for guidance. Please ensure all NFA parts or modifications have the proper paperwork associated with them prior to shipment. This includes short barrel rifle configurations.

Disclaimer: Manufacturer’s warranty is subject to change without prior notice.

Customer Reviews

Based on 4 reviews
100%
(4)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
J
Joseph Sheppard
16" diamondback Barrel

Diamondback barrels are outstanding value and craftsmanship. Dimple for the gas block,1:8 twist in my limited experience stabilizes 40gr. V-max up to 75gr bthp. Nitride finish is excellent. Just ordered the at3 nitride bcg. Can't wait to send rounds downrange.

Thank you for taking the time to leave a review for our Diamondback Firearms 16 Inch Carbine AR 15 Barrel. We are so happy to hear that you are pleased with the value and craftsmanship of our product. Our team takes great pride in producing quality barrels with features like the gas block dimple and 1:8 twist rate. We hope you enjoy using our nitride finish and the new AT3 nitride BCG. Happy shooting!

D
Derek Ward
16" Diamondback carbine barrel

Very nice. Great deal for a good quality item. Easy installation with a perfect fit into the upper reciever. Couldn't be happier.

Thanks for sharing your feedback! We're glad you're satisfied with your purchase.

M
Matthew Tempel
Great replacement

Bought to replace a 350l build for a friend. It worked out great and very happy with the results. At3 is my 1st stop when building, great products at great prices and awesome customer service.

l
l.
Very solid barrel

This is a great deal from AT3. The barrel exhibits quite good quality and is free of any flaws. It has a dimple for the gas block set screw which, on my barrel, aligned the gas block perfectly. Easy install into the receiver. Overall, I couldn't find a better deal anywhere online. AT3 certainly is the place to shop for AR15 parts and gear.

Thanks for sharing your feedback! We're glad you're satisfied with your purchase.

Customers who viewed this item also viewed these products

Diamondback Firearms 16 Inch 5.56 Barrel

Diamondback Firearms 16 Inch Midlength AR 15 Barrel - 5.56...

$99.99
High Value 5.56 Barrel for the Working American Low cost and high value components
Faxon Firearms 16 inch Government/Socom Barrel – 5.56 NATO – Mid-Length - 4150 QPQ

Faxon Firearms 16 inch Government/Socom AR 15 Barrel – 5.56...

$161.00
Combination Of The Standard M4 Profile & A Heavy Profile The Faxon Firearms 16
Diamondback Firearms 10 Inch 5.56 Barrel

Diamondback Firearms 10 Inch Carbine Length AR 15 Barrel -...

$89.99
AR15 Pistol Barrel at a Great Price If you’re looking at building an AR15
Faxon Firearms 10.5 inch Pencil Barrel – 5.56 NATO – Mid-Length – 4150 QPQ

Faxon Firearms 10.5 inch Pencil AR 15 Barrel – 5.56...

(no reviews yet)
$151.80
Lightest & Most Accurate Pencil Barrel In The Industry The Faxon Firearms 10.5 inch
Faxon Firearms 16 inch Gunner Barrel - 5.56 NATO - Mid-Length - 4150 QPQ

Faxon Firearms 16 inch Gunner AR 15 Barrel - 5.56...

$170.20
Perfectly Balanced Weight and Performance – Get the Most Out of Your Barrel Today!
Faxon Firearms 16 inch Pencil Barrel - 5.56 NATO - Mid-Length - 4150 QPQ

Faxon Firearms 16 inch Pencil AR 15 Barrel - 5.56...

$170.20
Preferred by Major Brands – Lightweight and Extremely Accurate Faxon Firearms Barrels are known

POF 16.5 Inch E2 AR 15 Barrel - 5.56 NATO...

(no reviews yet)
$239.99
Makes Your Shooting A Breeze Even With Coated Ammunition The POF 16.5 Inch E2
Faxon Firearms 10.5 inch Government / Socom Barrel - 5.56 NATO - Carbine Length - 4150 QPQ

Faxon Firearms 10.5 inch Government / Socom Barrel - 5.56...

$142.60
Light Profile Barrel – Tough Performance Built from 4150 CMV Steel – this light
Faxon Firearms 20 inch Gunner Barrel – 5.56 NATO – Rifle-Length – 4150 QPQ

Faxon Firearms 20 inch Gunner AR 15 Barrel – 5.56...

(no reviews yet)
$188.60
Expect Maximum Versatility, Heat Resistance, & Mitigation Of Barrel Whip The Faxon Firearms 20
Faxon Firearms 10.5 inch Pencil Barrel – 5.56 NATO – Carbine-Length – Pinned Gas Block - 4150 QPQ

Faxon Firearms 10.5 inch AR 15 Pencil Barrel – 5.56...

(no reviews yet)
$197.80
Lightest & Most Accurate Pencil Barrel In The Industry With A Pinned Gas Block
Midlength Gas System

White Label Armory 16" Midlength Government Profile AR 15 Barrel...

$124.95
Dimpled Barrel from the Factory for a True Mechanical Fit White Label Armory delivers
11.5 Inch Faxon Gunner Barrel

Faxon Firearms 11.5 inch Gunner AR 15 Barrel - 5.56...

$151.80
Introducing the BIG GUNNER – Perfect for Suppressed Shooters Ideal for suppressed shooters, the
Faxon Firearms 18 inch Gunner Barrel – 5.56 NATO – Rifle-Length – 4150 QPQ

Faxon Firearms 18 inch Gunner Barrel – 5.56 NATO –...

$179.40
Expect Maximum Versatility, Heat Resistance, & Mitigation Of Barrel Whip The Faxon Firearms 18
Faxon Firearms 10.5 inch Government/Socom Barrel – 5.56 NATO – Carbine Length – Pinned Gas Block - 4150 QPQ

Faxon Firearms 10.5 inch Government/Socom AR 15 Barrel – 5.56...

(no reviews yet)
$202.40
A More Robust Mounting Method For Your Gas Block The Faxon Firearms 10.5 inch
Faxon Firearms 14.5 inch Pencil Barrel - 5.56 NATO - Mid-Length - 4150 QPQ

Faxon Firearms 14.5 inch Pencil Barrel - 5.56 NATO -...

$161.00
Lightest Barrel in the Industry – No. 1 Choice of Major Brands Faxon Firearms

Frequently purchased together

AT3™ Low Profile Steel Gas Block + Gas Tube + Roll Pin Combo

AT3™ Low Profile Steel AR 15 Gas Block + Gas...

$35.99$30.59
Buy As A Set And Save! This combo includes your choice of 4 different
Fortis K1 Enhanced End Plate with Friction-Fit Castle Nut - AT3 Tactical

Fortis K1 Enhanced End Plate with Tapered Castle Nut for...

$42.70
Lightweight AR-15 Castle Nut and Endplate with Friction Fit Fortis created the two-piece K1

Strike Industries Fang AR-15 Trigger Guard

$18.95
Rugged and Refined Aluminum AR-15 Trigger Guards Elevate your AR’s style and performance with

Strike Industries Extended Latch Charging Handle for AR15

$39.95
Improve Your Performance With An Extended Latch Charging Handle From Strike The Strike Industries

Strike Industries Lightweight Forward Assist for AR15

(no reviews yet)
Rugged & Lightweight Forward Assist Upgrade From Strike The Strike Industries Lightweight Forward Assist

Strike Industries Ultra Light Takedown Pins for AR15

$14.95
Ultra-Light Take Down Pins For Custom Rifle Builds The Strike Industries Ultra Light Takedown

Strike Industries Advanced AR 15 Receiver Tube

7 Position AR-15 Buffer Tube with Unique Facets The AR-15 buffer tube often gets
Timber Creek Outdoors Billet Dust Cover - FDE

Timber Creek Outdoors Billet Dust Cover - AR BCD

$23.99
Stylish Billet Replacement for Mil-Spec Dust Covers in Multiple Colors Another great embellishment from

AT3 Tactical AR-15 Bolt Catch Assembly with Spring, Plunger, and...

$7.99$6.79
Mil-Spec AR-15 Bolt Catch with Hardware The AT3 AR-15 Bolt Catch Assembly has everything
Hogue AR-15/M-16 OverMolded Collapsible Buttstock (Mil-spec)

Hogue AR-15/M-16 OverMolded Collapsible Buttstock (Mil-spec)

$50.96
Rubberized Stock for Better Feel and Comfort – Guaranteed Beard Friendly Featuring a reinforced
Hogue AR-15 Overmolded Beavertail Pistol Grip with Finger Grooves

Hogue AR-15 Overmolded Beavertail Pistol Grip with Finger Grooves

$25.46
Durable and Lightweight – Comfortable Grip for Better Accuracy Keep that grip secure with
AT3 Tactical Crush Washer - 1/2 Inch for 5.56/.223

AT3™ 1/2 Inch Crush Washer for .223/5.56 Muzzle Devices Compatible...

$1.99$1.69
Time Your Muzzle Device with a Black Nitride Crush Washer from AT3 Crush washers
AT3™ AR-15 Bolt Carrier Group -  5.56 NATO/.300 Blackout - Black Nitride

AT3™ Black Nitride AR-15 Bolt Carrier Group - 5.56 NATO/.300...

$79.99$67.99
AT3 Tactical is bringing you the best with this Top-Tier Black Nitride Bolt Carrier

AT3™ FU-BAG™ AR-15 Lost Parts Kit - Springs, Detents, Replacement...

$7.99$6.79
Made an “Oops” with your New Build?  You Detent-Launchin’, Spring-Losin’ Fool, you. We’ve all

Questions & Answers

Don't see the answer
you're looking for?

Loading questions...