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10.5" 300 BLACKOUT AR-15 BARRELED UPPER - MAS DEFENSE NERO 12.62" M-LOK RAIL
10.5" 300 BLACKOUT AR-15 BARRELED UPPER - MAS DEFENSE NERO 12.62" M-LOK RAIL


 
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MSRP: $423.00
Our Price: $348.99
SALE PRICE: $298.99

Price with Selected Options: $298.99

Stock Status: In Stock


Product Code: MAS-103B1-MDNM-12

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 - 10.5" 300 Blackout Barrel. Click on the drop down box above to choose from our selection.

3. Handguard - MAS Defense "NERO" 12.62" 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.

***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: 14 CLICK HERE TO WRITE A REVIEW »

  0 of 0 people found the following review helpful:
 
5 of 5 Great products, great customer service. August 26, 2022
: John Lindt from Creswell, OR United States  
This was not my first purchase from MAS Defense, but by far the most impressive. For starters the products have all been above satisfactory. The quality fit and finish of each item I have received hasn't been anything less than perfect. With this particular item,because its sized was more than what would fit in my neighborhood mailbox, it would end up on my porch, that was not good for me, so I opted to have it shipped FedEx to my work. I recieved a call from Mario confirming this was indeed me and the address I wanted the product sent to. I actually really appreciated that, and it's service like that that guarantees return business. If I ever need anything and MAS sells it, that's where I'm getting it. Don't ever change MAS defense.
PS and they threw in an awesome koozie

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  0 of 0 people found the following review helpful:
 
5 of 5 Second upper June 7, 2021
: Harry from BOCA RATON, FL United States  
This is the 2nd upper I have purchased from Mas defense. Both are top notch in quality and look amazing. I've made several other purchases from them and all were shipped quickly with email updates and tracking. For anyone looking for a great custom looking build that's accurate and doesn't cost thousands, you absolutely can't go wrong here.

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  0 of 0 people found the following review helpful:
 
5 of 5 Looks great February 3, 2021
: Frederick Stevenson from Franklin , TN United States  
Upper arrived fast. The build it self is constructed really sturdy. No loose screws everything is tight. Can’t wait to fire it in a week or so.

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  0 of 0 people found the following review helpful:
 
4 of 5 Very happy July 4, 2020
: Jay Chapman from Haughton, LA United States  
The fit and finish was excellent. Haven't had a chance to shoot yet but as this is my 3 rd ballistic advantage barrel and everything else seems to be perfect. I expect no issues. Delivery time was excellent.

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  0 of 0 people found the following review helpful:
 
5 of 5 December 17, 2019
: Dustin Dennis from MIDLAND, NC United States  


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