HOME > AR-15 > AR-15 BARRELED UPPERS > 5.56 NATO / .223 >

13.9" 5.56 / .223 AR-15 BARRELED UPPER - MAS DEFENSE NERO 12.62" M-LOK RAIL
13.7" 5.56 / .223 AR-15 BARRELED UPPER - MAS DEFENSE NERO 12.62" M-LOK RAIL - BALLISTIC ADVANTAGE BARREL
 
Alternative Views:
MSRP: $430.00
Our Price: $369.99
SALE PRICE: $274.99

Price with Selected Options: $274.99

Stock Status: In Stock


Product Code: MAS-135N3-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
 
13.9" 5.56 / .223 BARRELED UPPER - MAS NERO 12.62" M-LOK RAIL

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 - 13.9" 5.56 / .223 1X7 Government 4150 CRMOV Melonite Nitride Barrel - Mid-Length Gas - MAS00120456

3. Handguard - MAS Defense "Nero" 12.62" M-LOK Free Floating Handguard - (ID 1.25") - Click on the drop down box above to choose from our selection.

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

5. Gas Tube - Mid-Length Stainless Steel Gas Tube

6. Muzzle Device - A2 Flash Hider

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***.

RELATED ITEMS
M16 BOLT CARRIER GROUP 5.56 & 300 BLACKOUT BCG - HYBRID GOLD TITANIUM NITRIDE (TiN) M16 BOLT CARRIER GROUP 5.56 & 300 BLACKOUT BCG - HYBRID NICKEL BORON M16 BOLT CARRIER GROUP 5.56 & 300 BLACKOUT BCG - MELONITE NITRIDE FORGED CHARGING HANDLE AR-15 - STANDARD TACTICAL LATCH
SALE PRICE: $99.99
SALE PRICE: $99.99
SALE PRICE: $79.99
Our Price: $24.99
M16 BOLT CARRIER GROUP 5.56 & 300 BLACKOUT BCG - HYBRID GOLD TITANIUM NITRIDE (TiN) M16 BOLT CARRIER GROUP 5.56 & 300 BLACKOUT BCG - NICKEL BORON AR-15 M16 BOLT CARRIER GROUP 5.56 & 300 BLACKOUT MELONITE NITRIDE BCG FORGED CHARGING HANDLE AR-15 - STANDARD TACTICAL LATCH

Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 6 CLICK HERE TO WRITE A REVIEW »

  0 of 0 people found the following review helpful:
 
5 of 5 13.7" upper May 30, 2023
: Christopher Duncan from Clarion, PA United States  
Service was fantastic, with ultra-quick shipping.  The upper looks and works fantastic!  I would definitely buy from MAS Defense again, and would recommend them to anyone!

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
5 of 5 New build April 16, 2023
: Robin Dickinson from Clover, SC United States  
Great fit.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
5 of 5 13.7 " upper October 20, 2022
: Rich Moore from Liberty, TN United States  
Fast shipping and fast email response. I love the product  and will absolutely do business with them again!

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
5 of 5 Fantastic upper and company October 7, 2022
: Gabriel Padilla from Dunedin, FL United States  
Great upper. Barrel length is exactly what I wanted and looks great all hardware is tight and secured. My upper has a few blems but the great team at mas was super quick about resolving the issue.
The option to upgrade the receiver colors and also gas system on the website is quick and easy to use and provides a custom touch without ever having to pick up a wrench. Definitely going to return to purchase more parts as time rolls on with this company

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
5 of 5 13.7 upper May 3, 2022
: from WI United States  
Fit and finish are good - processing and shipping were quick.

Was this review helpful to you?

View All Customer Reviews