Return to 7.5" 5.56 / .223 AR-15 BARRELED UPPER - MAS DEFENSE NERO 9.87" M-LOK RAIL
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5 of 5 Great Sevices November 16, 2022
: Travis from Grovetown, GA United States  
Great coustomer service. Im out of town and have not seen the items ive ordered yet but will soon. Ill leave a review once i see them in person. But all the service was great and fast shipping.

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5 of 5 Awesome March 12, 2022
: Ramon Nieves from Phoenix, AZ United States  
Cant say anything bad! Product is great and came on time.

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5 of 5 Good bang for your buck December 28, 2021
: Thomas J from Washington, OK United States  
The upper seems to be good quality at a very reasonable price.

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5 of 5 Great Products ! October 20, 2021
: Tyler Garza from Victoria, TX United States  
Great Products, Great Quality, Great Customer Service

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5 of 5 Excellent price & delivered in 2 days July 2, 2021
: Lamont Worth from Charlotte, NC United States  
Product came earlier than I expected & they have the best prices I've seen so far

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5 of 5 As always an exceptional product. February 18, 2021
: Bill Hutchison from Westmoreland, TN United States  
I've ordered several barreled uppers from MAS. Each one has been a great product. I will be ordering from MAS again.

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5 of 5 Top notch, as always November 24, 2020
: Justin Novick from Concord, NC United States  
Arrived in 2-3 days looking great

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5 of 5 November 13, 2020
: Ronnie from DEL RIO, TX United States  
Fast service. Love the quality and price.

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5 of 5 Flawless during function firing November 3, 2020
: Thomas Harnett from Middletown, OH United States  
Function fired 30 rounds day one and now have about 300 rounds through it and very happy with the purchase.

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5 of 5 Great upper for the price September 24, 2020
: Steven Bittick from Houston, TX United States  
This is my 2nd upper from MAS. Both have been perfect finish wise. Everything is tight and torqued to spec. Nothing has been loose or needing adjustment. I have built 2 “budget” rifles, both using MAS uppers. I’m sorry to say, or not sorry depending on how you look at it...but these are just as good as my $1300 DD uppers. The barrels may not have all the fancyness but the machining quality is there and the build quality is there. For a sub $400 upper you can’t go wrong. I have used DD bolts and bolt carriers in both of my budget builds, but that does not in any way (from what I can see) take away from the build quality and what these guys are doing out of SC. You are my number one go to for sub 1k uppers. Keep up the great work.

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