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Reviews & Ratings for Primary Weapons Systems MK111 MOD1-M .223 Wylde, 11.85in bbl Upper Receiver — 4 reviews

(4 reviews)
Primary Weapons Systems MK111 MOD1-M .223 Wylde, 11.85in bbl Upper Receiver
Primary Weapons Systems MK111 MOD1-M .223 Wylde, 11.85in bbl Upper Receiver
$1,129.95 $997.45 Save 12%
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Most Helpful Positive Review Top of the line
Very nice fit and finsh .run perfectly and very accurate out past 300 yards would definitely recommend for anyone looking for pistol upper that wants premium build.with the adjustable gas block makes it good for running all kinds of ammo and a can with little to no gas in the face .
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Second One I Own

by BigMikeAtlas, Verified Owner from FL, United States Written on February 14, 2025
This is the second Primary Weapons Systems (PWS) upper I own. My other one is a 300 Blackout. This .223 Wylde is for a new build I am finishing up. PWS makes a great reliable product. The accessible adjustable gas block is ideal and an added bonus for the future suppressor I will be adding to this build. This upper is well worth the price.
Would recommend: Yes
Was it helpful to you? Yes | No
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Extremely Accurate

by StronkTinman, Verified Owner from MI, United States Written on November 21, 2024
Tested this upper receiver with over 500 hundred rounds on the first range trip with only a little lubricant on the bolt and some internals. The only issue that I had was a failure to feed on some steel case ammo that is over 20 years old. When using a suppressor, the upper ran very clean and well without any gas coming back in my face. I had to use setting 3 when running suppressed or the bolt would fail to go into battery
Pros:
  • Accurate
  • suppressor friendly
  • Lightweght
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No
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good shooter

by DJ, Verified Owner from FL, United States Written on October 27, 2024
It was on backorder and it took a while to get. I paired it with an aero m4e1 lower and its great
Would recommend: Yes
Was it helpful to you? Yes | No
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