Return to 13.9" 5.56 / .223 AR-15 BARRELED UPPER - MAS DEFENSE NERO 12.62" M-LOK RAIL
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  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!

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5 of 5 New build April 16, 2023
: Robin Dickinson from Clover, SC United States  
Great fit.

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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!

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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

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5 of 5 13.7 upper May 3, 2022
: from WI United States  
Fit and finish are good - processing and shipping were quick.

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5 of 5 Just what I was looking for March 17, 2022
: Sam  
The fine people at MAS Defense quickly responded to question I had about their product and set me up with exactly what I was after. Product was shipped quickly and the quality of the product that arrived was excellent.  I look forward to making more purchases with MAS Defense

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