Primary Weapons Systems152742935
Pws Mk116 Mod 1-M Upper 16.1" Blk$1,129.95
Availability: In Stock
Current Stock: Out of stock
The PWS MK116 MOD upper receiver in 7.62x39 gives you a battle-hardened platform built on Primary Weapons Systems' reputation for reliability under hard use. This 16-inch complete upper combines a piston-driven system with a short-stroke design that's proven in military and civilian use—ideal for shooters who want a compact, maneuverable rifle without sacrificing power or control. Whether you're building a 7.62x39 AR for hunting, home defense, or range work, the MK116 MOD delivers the precision engineering and adjustability serious shooters expect.
The heart of this upper is PWS's long-stroke piston system with a 3-position adjustable gas block, letting you dial in cycling for different ammunition loads or suppressor use. The 41V50 steel barrel is built for accuracy and longevity, with a 1:10 twist rate optimized for 7.62x39 projectiles. The receiver itself is 7075-T651 aluminum with hard-coat anodize per Mil 8625 Type III Class 2 spec—tough enough for years of reliable service. The handguard is PWS's PicLok design at 15 inches, giving you genuine real estate for optics, lights, and other accessories without unnecessary weight.
Charging is handled by a Radian Raptor ambidextrous charging handle, so lefties and righties alike get a smooth, consistent pull. The included Triad 30 muzzle device completes the setup. This is a complete upper—bolt, carrier, charging handle, handguard all included—so you just need a compatible lower receiver and you're in business. Built in the USA, the MK116 MOD upper pairs heritage piston reliability with modern ergonomics and modularity.
| Caliber | 7.62x39 |
| Barrel Length | 16.1 inches |
| Barrel Material | 41V50 Steel |
| Barrel Twist | 1:10 |
| Operating System | PWS Long-Stroke Piston, 3-Setting Adjustable Gas Block |
| Gas System Length | Carbine |
| Upper Receiver | PWS 7075-T651 Hard-Coat Anodized (Mil 8625 Type III Class 2) |
| Handguard | PWS PicLok 15.0 inches (1.7" width, 2.25" height) |
| Charging Handle | Radian Raptor Ambidextrous |
| Muzzle Device | Triad 30 |
| Muzzle Velocity | 2374 ft/sec |
The PWS MK116 MOD is a complete upper receiver for any standard AR-platform lower receiver in good condition. Since it's calibered for 7.62x39, ensure your lower is also configured or built to handle that caliber.
Yes. The PWS long-stroke piston system includes a 3-position adjustable gas block, so you can optimize cycling for different loads and for use with or without a suppressor.
The MK116 MOD comes fully assembled and ready to mount on a lower receiver. It includes the barrel, bolt carrier group, gas system, handguard, charging handle, and muzzle device. You do not need a lower receiver to use it, but you do need to pair it with one to build a complete rifle.
The 1:10 twist rate is optimized for 7.62x39 ammunition and will stabilize the range of bullet weights commonly used in that caliber.
SKU: 115648224 • Weight: 5.56oz
Availability: In Stock
Current Stock: Out of stock
The PWS MK116 MOD upper receiver in 7.62x39 gives you a battle-hardened platform built on Primary Weapons Systems' reputation for reliability under hard use. This 16-inch complete upper combines a piston-driven system with a short-stroke design that's proven in military and civilian use—ideal for shooters who want a compact, maneuverable rifle without sacrificing power or control. Whether you're building a 7.62x39 AR for hunting, home defense, or range work, the MK116 MOD delivers the precision engineering and adjustability serious shooters expect.
The heart of this upper is PWS's long-stroke piston system with a 3-position adjustable gas block, letting you dial in cycling for different ammunition loads or suppressor use. The 41V50 steel barrel is built for accuracy and longevity, with a 1:10 twist rate optimized for 7.62x39 projectiles. The receiver itself is 7075-T651 aluminum with hard-coat anodize per Mil 8625 Type III Class 2 spec—tough enough for years of reliable service. The handguard is PWS's PicLok design at 15 inches, giving you genuine real estate for optics, lights, and other accessories without unnecessary weight.
Charging is handled by a Radian Raptor ambidextrous charging handle, so lefties and righties alike get a smooth, consistent pull. The included Triad 30 muzzle device completes the setup. This is a complete upper—bolt, carrier, charging handle, handguard all included—so you just need a compatible lower receiver and you're in business. Built in the USA, the MK116 MOD upper pairs heritage piston reliability with modern ergonomics and modularity.
| Caliber | 7.62x39 |
| Barrel Length | 16.1 inches |
| Barrel Material | 41V50 Steel |
| Barrel Twist | 1:10 |
| Operating System | PWS Long-Stroke Piston, 3-Setting Adjustable Gas Block |
| Gas System Length | Carbine |
| Upper Receiver | PWS 7075-T651 Hard-Coat Anodized (Mil 8625 Type III Class 2) |
| Handguard | PWS PicLok 15.0 inches (1.7" width, 2.25" height) |
| Charging Handle | Radian Raptor Ambidextrous |
| Muzzle Device | Triad 30 |
| Muzzle Velocity | 2374 ft/sec |
The PWS MK116 MOD is a complete upper receiver for any standard AR-platform lower receiver in good condition. Since it's calibered for 7.62x39, ensure your lower is also configured or built to handle that caliber.
Yes. The PWS long-stroke piston system includes a 3-position adjustable gas block, so you can optimize cycling for different loads and for use with or without a suppressor.
The MK116 MOD comes fully assembled and ready to mount on a lower receiver. It includes the barrel, bolt carrier group, gas system, handguard, charging handle, and muzzle device. You do not need a lower receiver to use it, but you do need to pair it with one to build a complete rifle.
The 1:10 twist rate is optimized for 7.62x39 ammunition and will stabilize the range of bullet weights commonly used in that caliber.
SKU: 115648224 • Weight: 5.56oz