Return to 14.5" 5.56 / .223 AR-15 BARRELED UPPER - MAS DEFENSE NERO 12.62" M-LOK RAIL
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5 of 5 Best Upper Ever! January 20, 2023
: The Latino Redneck Ninja from Thomasville, NC United States  
Hands down the best upper I have ever owned. Sub MOA accuracy with just FMJ, can't imagine with high end ammo. Craftsmanship is superb, lightening quick shipping. Beautiful finish, outstanding handguard with qd sling attachment integrated in the handguard. Beautiful logo on top of the receiver pic rai, on the side of the handguard and on the BCG.Overall; I am 110% satisfied and is my go to and favorite AR-15 over my BPM, BCM, Saint Victor and PSA. And best of all is that I pay a fraction of the price of my other AR's.

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5 of 5 Looks good June 24, 2022
: Adam Roberts from Canyon Country, CA United States  
Price, communication,  and shipping are 5 stars. This is the second MAS complete upper I've purchased from them. I haven't fired either yet and will give a complete review after

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5 of 5 Great September 14, 2021
: Andrew from California  
Throughly impressed with quality and the price of this upper. Earned my business and will buy again.

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5 of 5 my first gun July 16, 2020
: steven amato from Peconic, NY United States  
even during such unprecedented times delivery was timely and at an excellent price in my opinion. I will be buying again for my next build love the ballistic advantage  barrels quality parts.

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5 of 5 Upper July 7, 2020
: Thomas Conery from San Diego, CA United States  
Received in a timely manner.  Packing was exceptional!!!!!  Tee upper look great and will be assembled shortly.

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5 of 5 July 5, 2020
: Wesley Byerly from Reidsville , NC United States  
Very happy with this barreled upper.

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5 of 5 Great product/fast shipping June 23, 2020
: Blake A.  
Ordered this upper on Thursday 6/18 and it was delivered to my door Sunday 6/21. Super fast shipping. This may be the best upper I’ve bought for the money. Very good quality and I will definitely be purchasing from MAS DEFENSE again. I can’t say enough good things about my first experience with this company.

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5 of 5 June 19, 2020
: Joseph Nantista from Leonardtown, MD United States  
So far, got 2 uppers. Probably going to be doing a lot more business. Definitely satisfied. Even little things like dropping the bcg and charging handle in the upper when packaged. Its nice!

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5 of 5 Correct order January 4, 2019
: Ryan P from Hartford United States  
All items were configured the way I selected  fed aero slick side

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