Return to 16" 5.56 / .223 BARRELED UPPER - YANKEE HILL 12.5" TODD JARRETT
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5 of 5 MAS DEFENSE ROCKS ! April 13, 2017
: Ron A  
I bought this upper for my lady with a spiral fluted stainless barrel ! It took a few to get her Vortex Venom dialed in @ 25 yards having never dealt with anything like it before . Once dialed in however ; ( never shooting an AR15 before ) she proceeded with the remainder of her 50 round box of ammo to completely eliminate the center of the target ! Great People , great product and great quality has earned MAS DEFENSE my business as " One Happy Customer " ! Cheers MAS Defense

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5 of 5 awesome all the way around October 31, 2016
: william W  
Im very impressed with the service and the quality from Mas Defense. I love the upper and will be recommending Mas Defense to everyone. ALSO I WILL BE BUILDING MORE!!!!!!!!!!!!

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5 of 5 Awesome workmanship and quality May 28, 2016
: Christopher N  
This is the second upper have purchased from Mas Defense. I have not been disappointed with quality, fit or performance. The guys at work have started buying from Mas Defense too. This will be my onestop shopping from now on.

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5 of 5 Yankee Hill Machine Upper January 14, 2016
: FRANK E  
Very nice upper. Great service & fast delivery. I buy all my uppers from Mas Defense now.

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5 of 5 Great Product & Service December 28, 2015
: Brian Jo  
MAS Defense came highly recommended by a friend and I could not be more thrilled that he did so. I am very happy with the quality, customer service, and price. I'm already excited about my next purchase with MAS Defense.

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5 of 5 Excellent September 12, 2015
: Amanda S  
First time ordering from this site and very pleased. Will be ordering more stuff from mas defense

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5 of 5 excellent July 8, 2014
: George J  
The shipping was much faster than I expected. The quality and fit is great. Mated to a Spikes lower with no issues. My next build will be from MAS Defense.

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5 of 5 Great Product October 31, 2013
: jeremy c  
I love this upper. It looks great on my YHM lower. I have around 1500 rounds through it already and it has been nothing but perfect. MAS also has without a doubt the best customer service of any company I have shopped with. Thanks

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5 of 5 Quality October 7, 2013
: Ricky C  
Customer service was great answered all emails and questions promply. It says alot for MAS defense , I received upper it was assembled perfect great components could not be happier with quality, service, and price.

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