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Primary Weapon Systems

Primary Weapons Systems AR-15 MK1, MOD 2 Upper, 16.1" Barrel, 15" KeyMod Rail 7.62x39 Upper

PWS AR-15 MK1, MOD 2 Upper, 16.1" Barrel, 15" KeyMod Rail 7.62x39 Upper
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Availability: Out of stock




The shortest of the non-NFA models with a removable muzzle device, the PWS MK116 MOD 2 Upper is a crowd favorite. The MK116 is designed for a multitude of uses and retains lethal capability out to 500 meters with varying types of ammunition.


Weight – 4 lbs. 6 oz.

Overall Length – 25.25″

Barrel Length – 16.1″

Muzzle Device -FSC 556


Long-stroke piston:

The PWS long-stroke piston system combines the agility of the AR-15 with the reliability of the AK-47 into a sleek and efficient design.


Adjustable Gas Block:

Our three position adjustable gas block restricts gasses rather than venting them from the side. This allows the unused gas to exit from the front of the gun resulting in a quieter operation.

Position 1 is normal operation with standard and some military ammunition.

Position 2 is for suppressor use when running standard ammumition.

Position 3 is for suppressor use with hotter loads such as military ammumition.


Smooth Recoil Impulse

A detachable floating piston head is attached directly to the operating rod which is securely attached to the carrier.


In Motion

Watch the PWS long-stroke piston system at work in our functional cutaway, recorded with a high speed camera.


Additional Info

Additional Info

Manufacturer Primary Weapon Systems
Finish No
Barrel Length 16"
Caliber No
Configuration No
Option No
Gas Length No
Height No
Rail Length 15"
Mount No
Profile No
Reticle No
Co Witness No
Size No



Feel free to ask us any question regarding this product.