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Fortis Manufacturing Fortis Billet Upper Receiver
$199.95 $189.95 Save $10.00
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Most Helpful Positive Review Fortis Upper
Very well made , light weight, and complete with dust cover , would recommend highly to anyone , this was placed on a new build I have just completed, also came with with a foward assist, and a Awsome price.
Most Helpful Negative Review Loose Tolerances
Very well machined & finished, lightweight, aesthetically pleasing. So, why am I giving it 3 stars? The barrel extension to receiver fit is very loose. If you're from the school that finds a nice easy slip fit desirable, have at it, you'll love this. I know, for most users barrel nut torque holding ...
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Fortis Upper Reciever

by JRL, Verified Owner from CA, United States Written on November 25, 2025
well made, solid upper receiver with a billet aluminum gas to insert that holds the gas tube insert snug. Great looking upper and nice cerakote job!
Pros:
  • Excellent fit and finish
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No

Fortis stripped upper

by Thomas Harris, Verified Owner from MI, United States Written on October 31, 2024
Great finish very high quality workmanship high price follows but you do get what you pay for haven't installed on an upper yet probably use it with 223 wylde barrel for a woodchuck gun .
Pros:
  • Fit and finish
Cons:
  • None
Best Used for:
  • Any & All AR-15 Builds
Would recommend: Yes
Was it helpful to you? Yes | No

Nice Fortis For this upper part for Ar..

by Falcon072, Verified Owner from WA, United States Written on July 22, 2023
Great fit and finish. Top quality and customer service. Get this if you want something nice and light, color and coating is also well made.
Get it while it is still available. No Joke, I had to wait and wait for 2 years for this when it was out � of stock during slow to no production for Covid crisis.
Would recommend: Yes
Was it helpful to you? Yes | No

barrel fitment was to loose

by Frank Monr, Verified Owner from TX, United States Written on June 19, 2022
Its a beautiful upper, great lines aesthetically pleasing. However with an FN CHF barrel it slips right on in and even has slight play, i expect a tight fit requiring some anti sieze or heat to get a tight snug fitment. However this isnt it, i dont know if i should even try shimming for go through the hassle of a return and just use aero precisions M4E1 line for less money but way better fit.
Pros:
  • Looks nice
  • Quality machine work
Cons:
  • Loose fit
Best Used for:
  • non serious uses
  • Beginner AR builder.
Would recommend: No
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No

Will not fit Geissele rails

by fdc1970, Verified Owner from CT, United States Written on June 8, 2022
This receiver looks nice and it is something I wish I could use but it doesn't fit Geissele Mk4, Mk8, or Mk14 rails at all. The barrel fit is loose and jiggly tried faxon and ballistic so this receiver is junk that I have to return.looks
Pros:
  • Looks real nice in the box
Cons:
  • Junk
Best Used for:
  • return
Would recommend: No
Was it helpful to you? Yes | No

Recommended

by Fajah4816, from GA, United States Written on September 29, 2021
For my first rifle build, a good friend recommended
getting a Fortis upper. Parts are hard to come by these days. Thankfully Optics Planet had some available! Alhough Covid-19 is screwing up deliveries for everywhere, it arrived ahead of the quoted time.
Would recommend: Yes
Was it helpful to you? Yes | No

Quality Part

by Harry, Verified Owner from TX, United States Written on January 24, 2021
Really impressed with the quality of this billet upper. You can tell the manufacturing and finish of this part is top notch, especially when compared to other parts I’ve ordered recently. There isn’t much availability these days so I took a chance since it was in stock at Optics Planet and I’m pleased with my purchase.
Pros:
  • Quality Finish
  • Nice coating
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No

Fortis upper

by Kris, from MD, United States Written on August 4, 2017
Great upper! Used it on a 2A armament billet lower and it's perfect. It's sleek, it's solid, and took the 16 criterion middy very snug. Worth the money. It is a billet and gunsmith had to do very slight tooling for the geissele rail to be installed
Would recommend: Yes
Was it helpful to you? Yes | No

Fortis billet upper

by Matt, Verified Owner from TX, United States Written on May 31, 2017
Great fit and finish. Installed easily and when the barrel was installed it was true. No spacers needed. Make sure you use a billet lower for best results. Tried it on a forged lower and needed an acuwedge to tighten up the fit.
Would recommend: Yes
1 of 2 found the following review helpful.
Was it helpful to you? Yes | No
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