Return to 8.5" 300 BLACKOUT AR-15 BARRELED UPPER - MAS DEFENSE NERO 9.87" M-LOK RAIL

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0 of 0 people found the following review helpful:

Excellent Crafted Upper December 28, 2023 : STEVE from QUAKERTOWN, PA United States   A well machined gorgeous upper. I cannot wait to mate it with my PSA lower and my Adams Arms piston kit, and obviously a can of some sort. Was this review helpful to you?

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February 26, 2023 : B Mixon   Shipping was quick and fit and finish is excellent.  Definitely will be back for the next build Was this review helpful to you?

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Exactly what I wanted August 4, 2022 : Bryan Johnson from Arlington, WA United States   I have been looking for the perfect upper to make my 300 Blackout a complete package! And MAS DEFENSE 9” was the ticket. Thank you!! Was this review helpful to you?

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Some of the best customer service October 11, 2021 : Kent brown from Blythewood, SC United States   I received a personal phone call letting me know they are finishing up my orders this was the day after ordering it . I received the orders the next day. I will be ordering from them again if they have or can get what I need. Was this review helpful to you?

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Perfect for my pistol build May 21, 2021 : 300blk man from FL United States   Everything came assembled, packaging ensured the upper was well protected, and I received it in the mail far sooner than expected. I really like the look of the oversized handguard with long slim flash can. I can't wait to put a suppressor on this bad boy. Was this review helpful to you?

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Thumbs Up April 23, 2021 : Clint S. from Lake Ozark, MO United States   This is just for the quality feel of the upper and the shipping/service from MAS, will be shooting this weekend can update if any issues but I honestly doubt it. Researching due to availability issues with other uppers I was planning on getting led me to find MAS, and I'm glad I did this thing feels very high quality, looks great, and a BA 1:7 twist barrel with a KAK flash can for this price? Come on. Will definitely be doing more business here, couldn't be happier. Only critique I could have, and not even worth removing a star, is the ejection port cover is pretty thin and weak, it pops open with any kind of vibration like flipping up the front MBUS sight. No big deal can replace for less than 10$, for this price that seems the only place cheaped out on and worth it. Was this review helpful to you?

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First time buyer and just wow April 15, 2021 : Charles Whitney Jr from Pittsburgh, PA United States   I’m new to the ar world and took a chance in this company based on other recommendations I was given trying to build my ddpdw clone and I’m glad I did. Product was in stock and shipped rather fast ( rare in this climate). The fit and finish was excellent and I was able to assemble my project and take it out the next day.. 40 rounds to break it in and I was grinning like a kid on Xmas morning. They will be my 1st stop when I’m building my next ar project. I’m really glad I found you guys Was this review helpful to you?

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MAS DEFENSE STRIKES AGAIN!!! September 13, 2020 : Andre Whitmore from Cordova, TN United States   The service that you guys provide has made me into a repeat and loyal customer. Was this review helpful to you?

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8.5" 300 BLACKOUT AR-15 BARRELED UPPER - MAS DEFEN September 13, 2020 : Michael Restauri from Johnstown , PA United States   So far so good Was this review helpful to you?

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March 29, 2020 : from Huber Heights, OH United States   Great quality and fast shipment. Will be coming back for future builds. Was this review helpful to you?