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


 
RETAIL: $408.00
Our Price: $343.99

Price with Selected Options: $343.99

Stock Status: In Stock

Product Code: MAS-083B1-MDNM-10

Upper Receiver Options:


Barrel Options:


Handguard Options:


Gas Block Options:


Gas Tube Options:


Muzzle Device Options:



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 - (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.

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Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 10 CLICK HERE TO WRITE A REVIEW »

  0 of 0 people found the following review helpful:
 
5 of 5 Thumbs Up April 23, 2021
: Clint S. from Lake Ozark, MO United States  
This is just for the quality feel of the upper and the shipping/service from MAS, will be shooting this weekend can update if any issues but I honestly doubt it. Researching due to availability issues with other uppers I was planning on getting led me to find MAS, and I'm glad I did this thing feels very high quality, looks great, and a BA 1:7 twist barrel with a KAK flash can for this price? Come on. Will definitely be doing more business here, couldn't be happier. Only critique I could have, and not even worth removing a star, is the ejection port cover is pretty thin and weak, it pops open with any kind of vibration like flipping up the front MBUS sight. No big deal can replace for less than 10$, for this price that seems the only place cheaped out on and worth it.

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  0 of 0 people found the following review helpful:
 
5 of 5 First time buyer and just wow April 15, 2021
: Charles Whitney Jr from Pittsburgh, PA United States  
I’m new to the ar world and took a chance in this company based on other recommendations I was given trying to build my ddpdw clone and I’m glad I did. Product was in stock and shipped rather fast ( rare in this climate). The fit and finish was excellent and I was able to assemble my project and take it out the next day.. 40 rounds to break it in and I was grinning like a kid on Xmas morning. They will be my 1st stop when I’m building my next ar project. I’m really glad I found you guys

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  0 of 0 people found the following review helpful:
 
5 of 5 MAS DEFENSE STRIKES AGAIN!!! September 13, 2020
: Andre Whitmore from Cordova, TN United States  
The service that you guys provide has made me into a repeat and loyal customer.

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  0 of 0 people found the following review helpful:
 
5 of 5 8.5" 300 BLACKOUT AR-15 BARRELED UPPER - MAS DEFEN September 13, 2020
: Michael Restauri from Johnstown , PA United States  
So far so good

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  0 of 0 people found the following review helpful:
 
5 of 5 March 29, 2020
: from Huber Heights, OH United States  
Great quality and fast shipment. Will be coming back for future builds.

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