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13.9" 5.56 / .223 AR-15 BARRELED UPPER - MAS DEFENSE NERO 15" M-LOK RAIL
13.7" 5.56 / .223 AR-15 BARRELED UPPER - MAS DEFENSE NERO 15" M-LOK RAIL - BALLISTIC ADVANTAGE BARREL
 
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MSRP: $460.00
Our Price: $399.99
SALE PRICE: $289.99

Price with Selected Options: $289.99

Stock Status: In Stock


Product Code: MAS-135N3-MDNM-15

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:



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DESCRIPTION
 
13.9" 5.56 / .223 BARRELED UPPER - MAS NERO 15" 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" 15" 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 - Flash Can - Slim

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: 3 CLICK HERE TO WRITE A REVIEW »

  0 of 0 people found the following review helpful:
 
5 of 5 Excellent quality, great price April 20, 2023
: Aaron W  
The fit and finish is as good as any upper I’ve handled. Fits tight to a couple different lowers. Shipped incredibly fast as well. I am very pleased!

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  0 of 0 people found the following review helpful:
 
5 of 5 13.7" 556 upper March 24, 2023
: Anthony Taylor from Benton, KY United States  
For the price I was not expecting very much but I was very surprised by the quality of the fit and finish. Fit and finish is on par with some of my other uppers costing double the price.  At the time of the review, I have ony shot 160 rounds through it. I didn't have any malfunctions at all and accuracy was good.  Shipping was fast I received my order in 4 days.

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  0 of 0 people found the following review helpful:
 
5 of 5 Complete upper September 7, 2022
: Rem R from Anchorage, AK United States  
I was doing a budget build and found Masdefense.
I must say, the upper came in fast. Recently did a mag dump of 300 rounds of 556 and 223 and not a single malfunction. However, there was a gas leak on the block. Inspected and found no deficiencies. I placed it back and torqued it down. No more leak. Overall, very nice product for a reasonable price

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