Primary Weapons Systems MK116 PRO

Published on August 6, 2022
Duration: 9:10

This review of the Primary Weapons Systems MK116 PRO upper assembly highlights its long-stroke gas piston system, adjustable gas block for suppressor use, and 223 Wylde chambering. The presenter, with experience testing PWS products, notes its smooth operation, robust construction, and compatibility with various ammunition types. While praising its ergonomic design and user interface, a minor drawback mentioned is the lack of integrated QD sling mount points on the rail.

Quick Summary

The Primary Weapons Systems MK116 PRO features a 16-inch long-stroke gas piston system and an adjustable gas block, ideal for suppressor use. Its .223 Wylde chamber enhances accuracy while safely handling 5.56 NATO pressures. The upper is known for its smooth operation and reliable function with diverse ammunition types.

Chapters

  1. 01:02Introduction & Pricing
  2. 02:25Gas Piston System Explained
  3. 03:01Adjustable Gas Block Features
  4. 04:02Suppressor Compatibility
  5. 04:44Ammunition Testing
  6. 06:13Rail System & Ergonomics
  7. 07:20Upper Receiver Design
  8. 08:24Conclusion & Recommendation

Frequently Asked Questions

What are the key advantages of the Primary Weapons Systems MK116 PRO's gas piston system?

The MK116 PRO utilizes a long-stroke gas piston system that vents excess hot gases and debris away from the bolt carrier group, leading to a cleaner, cooler, and more reliable operating system, especially beneficial during extended firing or suppressed use.

How does the adjustable gas block on the PWS MK116 PRO benefit the shooter?

The adjustable gas block allows precise tuning of gas pressure, enabling optimal performance with various ammunition types and significantly improving shooting dynamics when using a suppressor by mitigating excess backpressure and gas blowback.

What is the significance of the .223 Wylde chamber in the PWS MK116 PRO?

The .223 Wylde chamber offers a balance between accuracy and pressure handling. It provides the tighter tolerances of a .223 Remington chamber for enhanced precision while safely accommodating the higher pressures generated by 5.56x45mm NATO ammunition.

What is the typical price range for the Primary Weapons Systems MK116 PRO upper?

The MSRP for the PWS MK116 PRO upper assembly is over $1400. However, it can often be found on sale at retailers like OpticsPlanet for around $950, with potential price variations between desktop and mobile website views.

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