This was not my first purchase from MAS Defense, but by far the most impressive. For starters the products have all been above satisfactory. The quality fit and finish of each item I have received hasn't been anything less than perfect. With this particular item,because its sized was more than what would fit in my neighborhood mailbox, it would end up on my porch, that was not good for me, so I opted to have it shipped FedEx to my work. I recieved a call from Mario confirming this was indeed me and the address I wanted the product sent to. I actually really appreciated that, and it's service like that that guarantees return business. If I ever need anything and MAS sells it, that's where I'm getting it. Don't ever change MAS defense. PS and they threw in an awesome koozie
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Second upper
June 7, 2021
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Harry from BOCA RATON, FL United States
This is the 2nd upper I have purchased from Mas defense. Both are top notch in quality and look amazing. I've made several other purchases from them and all were shipped quickly with email updates and tracking. For anyone looking for a great custom looking build that's accurate and doesn't cost thousands, you absolutely can't go wrong here.
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Looks great
February 3, 2021
:
Frederick Stevenson from Franklin , TN United States
Upper arrived fast. The build it self is constructed really sturdy. No loose screws everything is tight. Can’t wait to fire it in a week or so.
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Very happy
July 4, 2020
:
Jay Chapman from Haughton, LA United States
The fit and finish was excellent. Haven't had a chance to shoot yet but as this is my 3 rd ballistic advantage barrel and everything else seems to be perfect. I expect no issues. Delivery time was excellent.
Great products, great customer service. 
Very happy 
