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16" 5.56 / .223 AR-15 BARRELED UPPER - MAS DEFENSE GROUNDWORKS 13" M-LOK RAIL - MID LENGTH W/ BCG & FCH
16" 5.56 / .223 AR-15 BARRELED UPPER - MAS DEFENSE GROUNDWORKS 13" M-LOK RAIL - MID LENGTH GAS


 
RETAIL: $575.00
Our Price: $509.99
SALE PRICE: $399.99

Stock Status: In Stock

Product Code: MAS-165N3-MDGW-13
Qty:

DESCRIPTION
 
16" 5.56 / .223 AR-15 BARRELED UPPER - MAS DEFENSE GROUNDWORKS 13" M-LOK RAIL - MID LENGTH GAS
***BOLT CARRIER GROUP AND FORGED CHARGING HANDLE INCLUDED


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 - 16" 5.56 NATO / .223 1x7 Twist Govt Profile 4150 CrMoV Melonite Nitride Treated

3. Handguard - MAS Defense "Groundworks" 13" Slimline M-LOK Free Floating Handguard - (ID 1.25")

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 Half Cage

7. Charging Handle - Forged

8. Bolt Carrier Group - M16 BCG Melonite Nitride


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: 2 CLICK HERE TO WRITE A REVIEW »

  0 of 0 people found the following review helpful:
 
5 of 5 Complete upper May 9, 2021
: Joe Michael from Humboldt, KS United States  
MAS is always my go to for AR parts.  This complete upper is an excellent product, I would definitely recommend. Even with the current demand for all things firearm related MAS continues to offer quality products at very reasonable prices.  Thank you for continuing to be the excellent company you have always been!

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  0 of 0 people found the following review helpful:
 
5 of 5 Beautiful looking upper awesome as always April 7, 2021
: Paul from CA, United States  
This is beautiful looking upper! The rails really what I was looking for looks to be much better quality the Nero real oh, not that the mural rail is bad! My only concern is for keeping zero on IR. The one thing that I would have liked to have seen is a steel barrel nut instead of aluminum.

On a sub note, I would really love to see a heavy Socom profile carbine length barrel nitrided.

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