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8.5" 300 BLACKOUT AR-15 BARRELED UPPER - MAS DEFENSE NERO 9.87" M-LOK RAIL - FDE
8.5" 300 BLACKOUT AR-15 BARRELED UPPER - MAS DEFENSE NERO 9.87" M-LOK RAIL - FDE


 
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MSRP: $425.00
Our Price: $368.99
SALE PRICE: $318.99

Price with Selected Options: $318.99

Stock Status: (Out of Stock)

Product Code: MAS-083B1-MDNM-10F

Upper Receiver Options:


Barrel Options:


Handguard Options:


Gas Block Options:


Gas Tube Options:


Muzzle Device Options:


***ON SALE - Choose a Bolt Carrier Group:


***ON SALE - Choose a Charging Handle:



Qty:  
DESCRIPTION
 
The options listed below come standard with this barreled upper. The drop down options listed above allow you to customize your build. You can leave them as is, change one option or change them all! We let you build your upper the way you want it built!

1. Upper Receiver - 7075 T6 Aluminum A4. Precision Machined to Mil-Spec Tolerances. Black Hardcoat Anodized Mil-Std-171 Type III. M4 Ramps, Forward Assist, Ejection Door.

2. Barrel - 8.5" - 9.5" 300 Blackout Barrel. Click on the drop down box above to choose from our selection.

3. Handguard - MAS Defense "NERO" 9.87" Slimline M-LOK Free Floating Handguard - FDE (ID 1.25")

4. Gas Block - .750 Low Profile Steel Melonite Nitride Treated Gas Block

5. Gas Tube - Pistol Length Stainless Steel Gas Tube

6. Muzzle Device - Flash Can - Slim (Pictured)

Bolt Carrier Groups and Charging Handles are sold separately.

All barreled uppers are head spaced and test fired to ensure function.

ALL LAWS APPLY. IT IS THE RESPONSIBILITY OF THE BUYER TO UNDERSTAND ALL LAWS REGARDING PURCHASE AND OWNERSHIP OF THIS UPPER. WE STRONGLY URGE YOU TO CONTACT YOUR LOCAL FFL AND/OR THE ATF WITH ANY AND ALL QUESTIONS TO MAKE SURE YOU UNDERSTAND THE LAW BEFORE PURCHASING THIS ITEM.

***80% LOWERS CANNOT BE PURCHASED WITH BARRELED UPPERS OR BUILD KITS. ORDERS THAT INCLUDE THEM WILL BE CANCELLED AND CHARGED A 15% CANCELLATION FEE***.

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Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 8 CLICK HERE TO WRITE A REVIEW »

  0 of 0 people found the following review helpful:
 
5 of 5 Amazing product and service April 20, 2023
: John Nguyen from Portland, OR United States  
The website was very user friendly and ordering was easy. My upper receiver arrived within a week.

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  0 of 0 people found the following review helpful:
 
5 of 5 Customer Care is excellent November 11, 2021
: DANIEL from South Milwaukee, WI United States  
I had a few questions I emailed Customer Care they called me back. One of the few companies I work with who Customer Care will call you back immediately he did a great job

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  0 of 0 people found the following review helpful:
 
5 of 5 Excellent Customer Support June 7, 2021
:  
They worked with me to put together an upper that wasn't listed on the site, and had it together and shipped to me in just a couple of days. The upper itself is excellent, lightweight, and well crafted.

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  0 of 0 people found the following review helpful:
 
5 of 5 I love Mas Defense March 4, 2021
: Ricky from ALEXANDRIA, IN United States  
A few years ago, I built my first AR and got my barrel from mas defense. It's been great and never had an issue. Started a 300 Blkout build and came back to mas defense. I haven't shot with the built upper I received from them yet, but it arrived quickly and in perfect condition. Thanks a lot guys, super impressed with your work.

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  0 of 0 people found the following review helpful:
 
5 of 5 Great quality April 10, 2020
: RC from Dulce, NM United States  
I couldn't be happier with my new Mas defense upper.

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