Anderson 5.56 16 inch M4 Barrel, Assembled Front Sight – Carbine Length


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An Excellent Pick for your Next Build – Affordable and Highly Recommended

The perfect choice for your next AR build! Made from 4150 CMV Steel with a parkerized finish which features a carbine length gas system and a .750″ gas port with a 1:8 twist. Includes an A2 Front Sight Base With Sling Swivel, A2 M4 Notched Hand Guard Cap, & A2 Barrel Nut. Made in USA and backed by a limited lifetime warranty.


  • A perfectly balanced barrel for better accuracy. Works just as well as other expensive brands.


  • 4150 CMV steel makes barrel last long in action.

High Value

  • Superior quality at an unbeatable price.
  • TWIST RATE: 1:8
  • MATERIAL: 4150 Chrome Moly Vanadium
  • FINISH: Parkerized
  • GAS SYSTEM: Carbine
  • GAS BLOCK: .750?
  • MUZZLE THREAD: 1/2-28
  • INCLUDES: A2 Front Sight Base with Sling Swivel, A2 M4 Notched Hand Guard Cap & A2 Barrel Nut
  • ADDITIONAL SPECS/NOTES: Barrel is compatible with .223 Ammunition.


Caliber5.56 NATO/.223 Remington
Barrel Length16 inches
Barrel Twist Rate1:8 inches
Barrel Material4150 CMV
Muzzle Threads1/2/2028
Barrel FinishParkerized
Gas Block Size.750″ Gas Block
Barrel ProfileM4
Barrel Gas SystemCarbine
Gas Block Journal Length1.9 inches
Barrel ExtensionM4
Weight56 ounces

Have Questions About this Product?

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.

Anderson Limited Lifetime Warranty

  • Anderson Manufacturing warrants to the original purchaser of its products that its products are free from defects in materials and workmanship for the entire time that the product is owned by the original purchaser.
  • The original purchase must be in the United States. The sole and exclusive remedy is limited to repairing or replacing, at our option, any product manufactured by Anderson Manufacturing that is determined to be defective.
  • Any defective product will be remedied by Anderson Manufacturing or its authorized representative without charge, other than freight and insurance charges for the return of the product.
  • If we send you a new product, we will keep the defective one.


Anderson Manufacturing will not be responsible for defects, malfunctions or required repairs resulting from:

  • Improper assembly of a firearm using Anderson Manufacturing parts, using parts not manufactured by Anderson Manufacturing or using incorrect components.
  • Damage or breakage to Anderson Manufacturing parts during assembly by the purchaser, such as stripping threads, cracking parts due to overtightening or snapping trigger guard ears due to improper installation.
  • Unauthorized or improper modification or alteration.
  • Improper repair or disassembly.
  • Careless handling, abuse, neglect, criminal misuse, negligence, or use under the influence of drugs or alcohol.
  • Unreasonable use, i.e., use of the products under conditions more severe than those for which they were designed and intended.
  • Normal wear, tear, and/or corrosion.
  • Use of defective or improper ammunition including remanufactured ammunition.

Note: All liability is excluded if the instructions in the Anderson Manufacturing Operation and Safety Manual are not fully observed.


  • Firearms or parts that are returned to Anderson Manufacturing for service that is not covered by the Warranty will be evaluated to determine if the service is to be charged a fee.
  • We will notify you by email or phone of the fee to be charged for the repair. If you approve the work by return email or phone, you must provide a credit card number (together with the name on the card, the expiration date, the CVV and the billing zip code) to cover the cost of the repair.
  • The following charges may apply to repair service:
  1. Evaluation: $30
  2. Cleaning: $50
  3. Labor: $50
  4. Replacement parts: Cost of parts
  5. Shipping: UPS shipping charges

Return Process

  • All warranty returns require a Return Merchandise Authorization Number (RMA).
  • When we receive the Repair and Return Form, we will send you an RMA Number by email (or by phone, fax, or mail if you did not provide an email address).
  • After you receive the RMA Number, you ship the product back to us.
  • The product must be shipped in a protective box. The product should be wrapped in bubble wrap or other similar packaging material to prevent movement and damage in the box while in transit.
  • Pack your return in the original shipping package, if possible.
  • You are responsible for proper return packing. Anderson Manufacturing is not responsible for damage caused in transit. We recommend you insure the package.
  • Make sure any firearm is not loaded.
  • We will respond within a reasonable time after receipt of the written notice and delivery of the product to us.

Send your return via USPS or UPS to:

Anderson Manufacturing
Service and Warranty, RMA#_____ (your RMA#)
1743 Anderson Blvd. Hebron, KY 41048

Fax # 859-689-4110

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

Customer Reviews

Based on 15 reviews
Mr. 300Blkout
Ar15 M4 fsp barrel assembly

The fit and finish was magnificent and it git here super fast, everything assembled perfectly and it fires like a dream, I will definitely buy again and tell a friend Or 2 the fsp was very easy to remove and replace and the price is a bit high but that's why you pay for quality

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

Mark Steen
Nice Barrel

I was surprised to see the quality of the barrel with such a great price with the A2 sight gas block being put together for you at AT3s shop . and I do have to say the install of the barrel was pretty easy even if your a beginner in the AR world . once I had it all done I went to the range and to be honest the barrel is dead on

Thank You AT3 for your service and quality products .

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

love these guys

everything ALWAYS goes perfect when ordering from these guys ,every single time , barrel arrived fast and in perfect condition , packed well , as always fair shipping , AT3 Tactical has been on my go to first list for a couple years now

Thank you for the kind words and for choosing AT3 Tactical as your go-to source for firearm products. We are happy to hear that your experience with us has been consistently positive and we will continue to strive for excellence in both our products and customer service. We appreciate your support and look forward to serving you again in the future.

Looks Good!

Still buying parts for this build, but I think the barrel is just perfect for what I doing. It will mate with a left handed upper, and Magpul furniture and rear sight.

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

Kevin Henshall
Awesome barrel at a very good price!

I picked up This set up to install on a PSA H & R upper receiver. Not only does the combination look very nice, but the barrels shoot pretty flat. The price and shipping were a great combination and I would not hesitate to purchase again. Kevin H

Thank you for sharing your feedback! We're glad you are satisfied with your purchase!