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SKU: 00-40027-BLK


Introducing the Bushmaster® ORC® II, the perfect complete upper assembly for anyone looking for reliability, accuracy, and ease of use with a Government Profile Barrel Weight. Built to the highest standards, this upper assembly is perfect for the range, or at home.

The Bushmaster® ORC® II features a caliber of 5.56 NATO (.223REM) and a carbine-length gas system. The 16’’ 4150 CMV Salt Bath Nitride Government Profile Barrel, with a 1:7 Twist Rate, and ½ x 28 Thread Pitch, provides both accuracy and power. The ORC® II's Salt Bath Nitride MPI Bolt Carrier Group ensures that the upper assembly will fire reliably time after time. The Bushmaster® ORC® II also features a 7075 Forged A4 Flattop Upper Receiver, allowing for the integration of any optic you prefer.

Originally designed for use of only a red dot optic, the ORC® II improves upon the PROVEN®, lightweight and reliable design of the original Bushmaster® QRC® with more modern solutions that allow for full customization of your rifle. The Bushmaster® 14’’ Free Float Rail ensures you can add your favorite accessories.

The Bushmaster® ORC® II is the perfect choice for anyone looking for a reliable, accurate, and lightweight upper assembly. Whether you're at the range or in the field, the ORC® II is sure to impress. So why wait? Get yours today and experience the Bushmaster® difference!

Features & Specifications

5.56 NATO / .223 REM
Barrel Length:
Barrel Material:
4150 CMV
Barrel Finish:
Salt Bath Nitride
Barrel Thread Pitch:
1/2 x 28
Twist Rate:
Gas System:
Carbine Length
Upper Receiver Material:
7075 Aluminum Alloy
Upper Receiver:
A4 Flat Top
Bolt Carrier Group Finish:
Salt Bath Nitride
MPI Tested
BFI® 14" M-LOK Handguard
Muzzle Device:
A2 Flash Hider
Front Sight:
Rear Sight:
Proudly Made In:

Important Information

Firearms Shipments:
In accordance with federal regulations, firearms may only be shipped to a licensed dealer. To avoid any delays in delivery, kindly ensure that you provide the FFL Dealer's information in the Shipping Directions when placing your order. If you do not provide the information with your order, we will reach out and request you provide us with your dealer's information to obtain a copy of their FFL. Once we receive the FFL, we will begin processing your order, and the lead time will start from that point. Please feel free to reach out to us at FFL@bushmaster.com if you have any queries or concerns regarding this proces.

Lower Receivers Shipments:
Lower receivers are also considered firearms under federal regulations and require an FFL (Federal Firearms License) prior to shipment. Therefore, it is important to ensure that your FFL dealer sends us a copy of their license, along with your name and order number via email. We appreciate your attention to this matter as it helps us ensure a smooth and timely delivery of your order. If you have any questions or concerns about this process, please do not hesitate to contact us at FFL@bushmaster.com

Magazines Shipments:
The magazine capacity of the firearm will depend on the jurisdictional restrictions of your state of residence. We want to ensure you receive a product that complies with your state's regulations.

Shipping to Alaska or Hawaii:
If you're shipping to Alaska or Hawaii, please be aware that there may be additional shipping charges. If applicable, we will contact you at the time of shipment to discuss additional costs. As always, your satisfaction is our top priority.

Important Information:
Warning: This product can expose you to chemicals, including lead, known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to - https://www.P65Warnings.ca.gov