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Very disappointed - Guntec USA AR-15 9mm Dedicated Billet Upper Receiver

by Brian, Verified Owner from WI, United States Written on October 20, 2018
Review for Guntec USA AR-15 9mm Dedicated Billet Upper Receiver
Guntec USA AR-15 9mm Dedicated Billet Upper Receiver
Guntec USA AR-15 9mm Dedicated Billet Upper Receiver
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Brian's Review of Guntec USA AR-15 9mm Dedicated Billet Upper Receiver

In general, it is a nice upper, except for one major flaw. The spacing on the rail is non standard so any red dot or scope mount with two or more cross bolts will not fit. Severely limits what you can mount to this upper.
Pros:
  • None
Cons:
  • Non standard rail spacing
Would Recommend: No
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Last updated 2025-11-12 UTC.