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Advanced Technology International 

ATI OEM Barrel AR-15 5.56 NATO 16" Melonite M4 Profile

Product SKU # :TSATIB556M4 |  MPN: ATIB556M4  | UPC # :
ATI OEM Barrel AR-15 5.56 NATO 16" Melonite M4 Profile
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Advanced Technology | Target Sports USA

AR-15 Barrel is fully chambered and ready for installation onto a host upper receiver.

The barrel features a true 5.56x45mm NATO Chamber for use with both commercial and military surplus ammunition

Includes one (1) 30 round magazine

This barrel is an excellent choice for a low budget, general purpose AR rifle build that's perfectly suited for use at the range, in a 3-Gun match, or in the field pursuing g
ame. This ATI AR-15 OEM barrel is an an exceptional alternative in regards to finances because it is a universal function AR rifle build that's well-matched for use at the range, in a 3-Gun match, or in the field chasing game.

Specifications and Features:

Caliber: 5.56 NATO
Finish: Melonited barrel
arrel:16" M4 Profile barrel
30 Round magazine
ATI OMNI polymer lower
Flat to
p upper receiver
Railed gas block
6 Position M4 collapsible stock
A2 Gr


FREE Shipping on Bulk Ammo, Firearms & More!

Target Sports USA always offers free shipping on bulk ammo & firearms!

How Will My Order Ship?

Target Sports USA will ship your order via UPS Ground. Target Sports ships to the lower 48 states. We DO NOT ship to Alaska, Hawaii, Puerto Rico, APO's or P.O. Boxes.

Shipping Firearms
Handguns ship 2nd Day Air & long guns ship Ground. All firearms must be shipped to an FFL Dealer for NICS check & transfer. Please note: firearms transfers are subject to an additional fee set by the dealer.

Shipping Insurance

Target Sports USA offers shipping insurance on every order in order to ensure proper and safe delivery. The entire purchase price of the damages or lost merchandise is covered.
Due to the unique nature of the product we sell, we only accept returns and apply shipping insurance if the actual cartridges are damaged within transit. Superficial damage to packaging does not qualify for a return, insurance claim or discount.
Example: Dented corners on packaging, scratches or dents on ammo cans or cracks within plastic packaging would not qualify for a return and would not be covered under the shipping insurance.

Order Cancellation

You can cancel your order up until the pick slip is printed and your order is in process to be packed and shipped. After that time, we are unable to cancel your order.

If the order has shipped and a tracking number is available and you Refuse Delivery, a 10% restocking fee will be applied.

Incorrect Shipping Address

If you have supplied an incorrect shipping address & call prior to shipment, we can correct the address at no charge. If your order has been shipped, an address change fee per package will be added. If You Refuse Delivery, a 10% restocking fee will be applied.


Due to legal and safety regulations, ammunition sales are final and do not qualify for a return.


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Manufacturer Details

Advanced Technology International is premier manufacturer of gun, rifle, and shotgun stocks and accessories out of Wisconsin. ATI designs advanced stocks and kits for most of the popular firearms. Know best for their ATI Benelli M4 Raven Stock Scorpion Recoil System 922r Compliant in Matte Black and ATI AR-15 Lower Receiver Parts Kit. Target Sports USA carries Advanced Technology International for sale online with best selection to choose from.

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