Return to 8.5" 300 BLACKOUT AR-15 BARRELED UPPER - MAS DEFENSE NERO 7.25" M-LOK RAIL

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0 of 0 people found the following review helpful:

300 BLACKOUT 8.5" AR UPPER January 26, 2024 : Juan Lopez from Fontana, CA United States   Just received my 8.5" AR Upper in 300 Blackout. This thing looks awesome, solid and quality as well. First time buying from MAS Defense and have to say I'm very impressed. Now I'm very excited to build my next AR15 and can't wait to buy all the other items for my upper and lower to complete this build! Thank you MAS Defense for an awesome product! Sincerely,             Juan Lopez Was this review helpful to you?

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March 1, 2023 : Robert Bishop from Marysville, OH United States   Excellent costumer service, great product, fast shipping....I will definitely shop here again! Was this review helpful to you?

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300 blackout upper December 2, 2022 : from Monroe , NC United States   This is not my first purchase from MAS, won’t be last. I have been a customer for years. The upper was as I expected, assembled well, fit and finish were top notch. The attention to detail has always been on point with MAS. Was this review helpful to you?

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Will send Freedom Seeds November 11, 2021 : Sean P from MD United States   Looks awesome and fits great! 10/10!! Was this review helpful to you?

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Awesome transaction!!! May 21, 2021 : Douglas Wright from Baltimore , MD United States   Fast shipping - you had exactly what I was looking for!!  Muchas Gracias!!!!!!! I’ll be back for more!! Doug Was this review helpful to you?

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Great upper March 26, 2021 : Grant Jones from Dunn, NC United States   Great products each and every time I order from them. Was this review helpful to you?

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Great Fit/Perfect Size September 15, 2020 : from Plano, TX United States   The only reason I do not give this a five star review is the barrel nut had to be adjusted a bit, but otherwise works perfectly! ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- MAS Defense Response: Sir, the Nero barrel nut does not need to be timed for the gas tube. It is torqued to 40+ FT LBs. We are not exactly sure what you mean by "adjusted". Please let us know. Thank You for your feedback and your business! Was this review helpful to you?

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Fantastic September 13, 2020 : Joshua Abernathy from Toney, AL United States   The finish looks great. Seriously, great. Not one blemish. The finish matches my Springfield Saint Victor perfectly. There's no visual difference at all. It even has a tighter fit than the original upper. There's absolutely no play between the receiver's what so ever. The only small, and I mean small, thing that doesn't match flawlessly is the upper is about 1mm (maybe less) too wide on the ejection side. The other side is prefect. That's the only thing cosmetically that I can find that isn't a 100% perfect match, and even that isn't anything to complain about. I haven't got to shoot it yet, but I plan on doing that tomorrow to sight in my optic. I have no worries that the ballistic advantage barrel will be great. If anything funky happens I'll either edit this review or make a new one. But I feel like this thing is going to shoot as good as it looks. This is definitely the best option in this price range, and it's giving the more expensive companies a run for their money. Was this review helpful to you?

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superb upper April 13, 2020 : David Holder from longview, TX United States   300 BLK functions flawlessly w/ spikes lower. Superior fit and finish, great job! Was this review helpful to you?

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Another positive experience with Mas Defense March 4, 2020 : Yannic Lariviere from Freedom Loving Dinwiddie, VA United States   This is my second 300 bo upper from M.D. and I am once again please with the quality of the parts and the workmanship of the builder. The BA barrel is far superior to the run of the mill barrels. These handguards are a great value and they look incredible. Keep up the good work yall. I am confident in your products, come tyrant or deer, they will go bang and put that round where I want it. Was this review helpful to you?