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Reviews & Ratings for OpticsPlanet Exclusive Moriarti AR-15 10.5in 300 Blackout Upper Receiver, A2 Flash Hider — 7 reviews

(7 reviews)
OpticsPlanet Exclusive Moriarti AR-15 10.5in 300 Blackout Upper Receiver, A2 Flash Hider
OpticsPlanet Exclusive Moriarti AR-15 10.5in 300 Blackout Upper Receiver, A2 Flash Hider
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Most Helpful Negative Review will not cycle
I’ve had to mess with the gas block to realign it on the barrel trying to figure out why it won’t cycle keeps locking the bolt in the receiver very hard to remove
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Experiment to find affordable upper in 300BLK

by Roger, from FL, United States Written on December 18, 2025
I bought it with intention to replace hand guard with a Geissele SMR MK8. First issue gas block had a cross threaded screw. Drilled that out and replaced it. Second issue Upper Receiver is not to Mil Spec standards. Takedown pin holes had to be metal filed open in order to pass the pins. Next time I will stick with Aero or BCM.
Pros:
  • Affordable
Cons:
  • Poor craftsmanship
Would recommend: No
Was it helpful to you? Yes | No
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not the best buy

by mike, Verified Owner from MO, United States Written on March 23, 2025
Loose barrel nut an gas block was not tight nor in the right position
Would recommend: No
1 of 1 found the following review helpful.
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clean upper

by Mario k, Verified Owner from NV, United States Written on October 27, 2024
Clean look works good . Set up on my 300 blackout . Straight shot
Would recommend: Yes
Was it helpful to you? Yes | No
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10.5 300 blk

by Donald, Verified Owner from CO, United States Written on March 23, 2024
Love it. Looks sharp shoots nice, been one of my favorite purchases from this site!
Would recommend: Yes
Was it helpful to you? Yes | No
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Everything it was supposed to be.

by Robert, Verified Owner from FL, United States Written on February 13, 2024
For the money this upper is good looking, matches up well my with other lowers. Going to shoot it soon.
Would recommend: Yes
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Wow! Don’t sleep on the new brass/rose gold color!

by Wheels, Verified Owner from NM, United States Written on February 2, 2024
Wow did this turn heads( including mine) ! At first I was a little timmed on buying such a color but that definitely changed. Once it came in I was in shock! The color coated brass/rose gold was spectacular, this is a great purchase for anyone interested in getting not only a show price but a reliable one!
Pros:
  • reliability
  • color
Cons:
  • No 2dayshipping
  • not many accessories match the color
Best Used for:
  • Range
  • Show
Would recommend: Yes
0 of 3 found the following review helpful.
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