Return to MAS DEFENSE AR-15 FORGED UPPER RECEIVER - SLICK SIDE - BLACK

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0 of 0 people found the following review helpful:

Great service! June 4, 2026 : Joseph Barrett from Hazleton, PA United States   I'm very happy with the stripped upper I purchased. I highly MAS Defense. Was this review helpful to you?

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Excellent finish, custom details January 29, 2026 : Alexandre Beraldi from Orlando, FL United States   Smooth deal, contacted the company and asked for no logo version. Shipped next day. Excellent. Was this review helpful to you?

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Good stuff January 11, 2026 : Terry from Colorado   Item as described. Was this review helpful to you?

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Upper receiver January 7, 2026 : Joshua Hewitt from Ocala, FL United States   Perfect product! Was this review helpful to you?

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Nice upper December 7, 2025 : Kaarlo Elonen from Waynesboro, VA United States   Used this upper on a 9mm AR pistol build. I like the slick side and forward assist is unnecessary on 9mm. Price was attractive too and lowest I found for slick sided upper. Upper went together with no problems and dark finish matched the lower. Happy customer. Was this review helpful to you?

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Forged Upper November 28, 2025 : J.W. from TN United States   The upper was exactly as described and is good quality. Was this review helpful to you?

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Photos do not show the MAS engraving on top... April 30, 2025 : from FL United States   I do not like the engraving and would have liked to know it was there and to have the option to order with no engraving. Fit and Finish otherwise is 5/5 Was this review helpful to you?

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Absolute Show Stealer February 20, 2025 : Nich Miller from El Dorado, AR United States   We needed an upper for a last minute SHOT Show display and I found MAS Defense. I can't believe I'd never heard of you before because this thing is crisp!! We bought a couple more, before the show, because we wanted them for our displays AND because MAS ships fast as heck! The uppers were held by hundreds of people and caught a lot of admiration. Since we were selling a barrel/muzzle device, our choice of upper was something we got to brag about. You're making something that is consistently in-spec, gorgeous, tough as nails, and incredibly well priced and I (we) appreciate it. Was this review helpful to you?

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Slick side upper February 13, 2025 : Lance K from Fairfield, TX United States   Product was exactly what I was looking for. Completely satisfied. Was this review helpful to you?

0 of 0 people found the following review helpful:

Very pleased February 13, 2025 : Average Joe from West Saint Paul, MN United States   This slick upper fit and finish is very good. Barrel and the lower fitted on to the upper with no issue. The feed ramp is in line with the barrel and cartridge loaded smoothly. Bolt carrier slides freely in the upper without blockage. The upper also did not hinder the magazine to drop freely in my lower. I can definitely say this doesn’t happen with some other brand uppers. Looking forward to do some range time with this new upper! Was this review helpful to you?