Primary Weapons Systems 16.1″ MK116 Pro Complete Upper – .223 Wylde


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SKU: 19-PM116UA0B UPC: 811154030955

Product Description

The PWS MK116 PRO features the tried and true PWS long-stroke piston system. This line is perfect for shooters looking for a cost-effective piston system firearm without sacrificing the high-quality standards PWS has been known for over a decade. Featuring a 3-setting adjustable gas system for users with suppressors, free-float MLOK handguard, Radian Raptor charging handle, an extruded upper receiver that integrates an extremely solid handguard attachment system, the MK1 PRO line has an assortment of features ideal for shooters of all levels. Available as a complete upper or complete firearm (both pistol and rifle configurations). As with all PWS complete upper receivers, they will fit seamlessly to any AR15 lower receiver with no need for additional accessories. The PRO line is the best value on the market when it comes to piston-driven operating systems, including high-end features and custom components.


  • Operating System: PWS Long Stroke Piston System, 3 setting Adjustable Gas Regulator.
  • Caliber: .223 Wylde
  • Barrel Length: 16.1”
  • Gas System Length: Mid-Length
  • Barrel Twist Rate: 1:8
  • Muzzle Device: A2 Flash Hider
  • Upper Receiver: PWS Proprietary Piston Upper.
  • Material: 6061 Aluminum.
  • Finish: Anodized.
  • Handguard: PWS M-Lok™ 15” Handguard (1.7” width, 2.25” height)
  • Charging Handle: Radian Raptor™ Ambidextrous Charging Handle




Technical Information

Size 16.1"
Caliber .223 Wylde
Barrel Twist 1/8
Thread Pitch 1/2 x 28
Gas System Piston
Material 6061 Aluminim
Finish Anodized
Firearm Compatibility

Catalog Location

California Prop 65 Warning

WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information visit