Brownells 75th Anniversary - A Shooting Heritage

The PWS MK1 PRO line features the 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, 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 add 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.  Adding to the overall value, the entire MK1 PRO line comes with the same performance expectations and lifetime guarantee as all PWS products.

The MK116 PRO upper features a 16.1” barrel, the perfect length for shooters wanting a do-all rifle. Taking your PRO out long distance? No problem. Having 2980 feet per second velocity makes this rifle an easy choice. Compatible with any AR-15 lower, the MK116 PRO upper is a work horse whether it’s used for competition 3-gun matches or training in classes.

  • Caliber: .223 Wylde
  • Barrel Length: 16.1”
  • Weight: 4 lb. 14 oz.
  • Length: 20.5”
  • Piston System: Mid-Length
  • Velocity: 2980 ft/sec
  • MK116 PRO Upper Features:
  • PWS long stroke piston operating system
  • 3-setting adjustable gas system
  • 6061 Extruded Upper receiver
  • Eliminated forward assist
  • A2 Flash Hider
  • 1:8 barrel twist rate
  • Radian Raptor Charging Handle

Big Book Catalog, Issue:72, Page:006
Big Book Catalog, Issue:73, Page:006


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This item is currently unavailable for backorder.

Cartridge: 223 Wylde

Finish: Anodized

Style: Complete

Color: Black

Length: 16.1"

Twist: 1-8