Primary Weapons Systems MK116 Mod 1-M Upper
Compact 16.1" upper receiver for AR-15 in 223 Wylde with chrome-lined barrel, free-float M-LOK handguard, and included Radian Raptor charging handle. Purpose-built for versatility and reliability.
The Proven Compact Upper
The Primary Weapons Systems MK116 Mod 1-M Upper represents the shortest non-NFA upper in the PWS lineup, and for good reason. This is a crowd favorite that delivers genuine capability in a compact package.
Core Features
Barrel & Accuracy
- 16.1" chrome-lined 4140 steel barrel in 223 Wylde chambering
- 1:8" twist rate for stable performance across ammunition types
- Maintains lethal capability to 500 meters with standard ammunition
Receiver & Construction
- Fully forged 7075-T6 anodized aluminum upper receiver
- Mil-spec design philosophy with forward assist controls
- Built for durability and consistent performance
Handguard & Ergonomics
- 15.05" free-floating M-LOK handguard for precision and modularity
- Removable FSC 556 muzzle device for flexibility
- Includes Radian Raptor ambidextrous charging handle
The PWS Advantage
The MK1 Mod 1-M line features Primary Weapons Systems' proven long-stroke piston system—the same reliable design that PWS owners have trusted for years. This upper is engineered as a no-nonsense tool for shooters who demand high value, relentless performance, and dependability. Whether you're a civilian shooter, law enforcement professional, or serious enthusiast, the MK116 delivers the versatility and capability you need.
Features
- 16.1 223 wylde barrel"
- barrel twist rate 1:8
- muzzle velocity 2980fps
- pws fsc 556
- pws proprietary piston upper, t6 7075 forged, anodized
- pws m-lok 15.05 handguard"
- radian raptor ambidextrous charging handle
