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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
 
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MSRP: $408.00
Our Price: $343.99
SALE PRICE: $293.99

Price with Selected Options: $293.99

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:


***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 - (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: 15 CLICK HERE TO WRITE A REVIEW »

  0 of 0 people found the following review helpful:
 
5 of 5 Excellent Crafted Upper December 28, 2023
: STEVE from QUAKERTOWN, PA United States  
A well machined gorgeous upper. I cannot wait to mate it with my PSA lower and my Adams Arms piston kit, and obviously a can of some sort.

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  0 of 0 people found the following review helpful:
 
5 of 5 February 26, 2023
: B Mixon  
Shipping was quick and fit and finish is excellent.  Definitely will be back for the next build

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  0 of 0 people found the following review helpful:
 
5 of 5 Exactly what I wanted August 4, 2022
: Bryan Johnson from Arlington, WA United States  
I have been looking for the perfect upper to make my 300 Blackout a complete package!
And MAS DEFENSE 9” was the ticket.
Thank you!!

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  0 of 0 people found the following review helpful:
 
5 of 5 Some of the best customer service October 11, 2021
: Kent brown from Blythewood, SC United States  
I received a personal phone call letting me know they are finishing up my orders this was the day after ordering it . I received the orders the next day. I will be ordering from them again if they have or can get what I need.

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  0 of 0 people found the following review helpful:
 
5 of 5 Perfect for my pistol build May 21, 2021
: 300blk man from FL United States  
Everything came assembled, packaging ensured the upper was well protected, and I received it in the mail far sooner than expected. I really like the look of the oversized handguard with long slim flash can. I can't wait to put a suppressor on this bad boy.

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