Return to MAS DEFENSE AR-10 .308 DPMS GEN 1 HIGH PROFILE BILLET UPPER RECEIVER - BLACK

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0 of 0 people found the following review helpful:

Great product February 1, 2026 : Isaac Harris from Chandler, AZ United States   Very affordable well built and shipping was way faster than expected Was this review helpful to you?

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Good deal with small issue February 1, 2026 : Bryan Ridge from Southgate, MI United States   Upper looks great and I got it at a great price. Shipping was good and packaged well. The only issue I have is the pivot and takedown holes are a little off or the coating is a little too thick. I set the upper into the pivot pin and as I lower the upper to the lower receiver it doesn't go all the way down to get the takedown pin in place. The coating at the front of the upper makes contact with the lower before it is flush. Was this review helpful to you?

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Fast, Immaculate quality, and great service October 27, 2025 : Cesar Martinez from Westminster, CA United States   I've had ordered a AR10  .308 upper receiver and had received it within a week, the workmanship is stupendous. I had bought in this upper for M5 Aero Precission lower. The back back, take down pen fitted perfectly. The front however, was slightly off and wasn't matching correctly But nothing a little bit of filing can't fix which I did and it fitted like a glove. Keep in mind, I'm using 2 different manufacturers and especially for an LR308/DPMS  ar10 style there isn't really a milspec fits all When it comes to this type of Built. Overall, great company will be ordering from them again. Was this review helpful to you?

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Budget upper October 22, 2025 : James Botschon from Fate, TX United States   I was looking for a good semi-budget upper for my AR-10 I'm building. Shipped pretty fast and looks like a quality build. I will update once the rest of my parts come in. Was this review helpful to you?

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Tight fit October 9, 2025 : Big Ed from Madera , CA United States   Bought this to go with an Anderson Gen II AM10 lower; it matched up very nicely with a very tight lock-up. I would buy again. Was this review helpful to you?

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Exceptional August 20, 2025 : Adam from NC United States   The upper I received is very nice. Nice finish, no marks left over from machining. Fits perfectly to my lower, to notch my dudes. Keep up the good work! I'll be buying here again. Was this review helpful to you?

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Impressive quality July 19, 2025 : Frederick Ledger from Temple, TX United States   I recently ordered a set of handguards for a clients upper, from another vendor. Upon receiving the handguards I realized it was a high profile handguard, Mas defense had exactly what I needed and got it to me in a matter of days. Excellent machine quality, no tooling marks and most of all, in full spec of every dimension, this is a sweet high profile upper. Was this review helpful to you?

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Perfect AR-10 upper July 2, 2025 : Slimbillfold from New Hampshire   I love these deals. I don't see the blems but, to me, they seem perfect. I could care less about cosmetic blemishes. One thing I really loved about this black one was the barrel fitment was so tight that I had to heat it up to get the barrel extension into the receiver... That's exactly what I want. I hate the one's that are flopping around like a limp sausage. Nice tight fit! The fitment to the lower was absolutely perfect as well. Was this review helpful to you?

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308 pistol June 25, 2025 : “Gunny” from Hc , FL United States   Outstanding looks seamless build is coming together nicely thank you Was this review helpful to you?

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Great product March 22, 2024 : Lawrence Jones   Was this review helpful to you?