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Primary Weapon Systems

Primary Weapons Systems AR-15 MK1, MOD 2 Upper, 16.1" Barrel, 15" KeyMod Rail, .223 Wylde, FSC 556-Complete Upper

PWS AR-15 MK1, MOD 2 Upper, 16.1" Barrel, 15" KeyMod Rail, .223 Wylde, FSC 556-Complete Upper
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The PWS upper are now forged, allowing for a stronger and lighter product.

A common known fact that has been lost through the marketing efforts of many AR 15 manufacturers is that a forging can produce a piece that is much stronger than a billet part.

As the metal is shaped during the forging process, its internal grain aligns to follow the general shape of the part.

As a result, the grain is continuous throughout the part,giving rise to a part that is stronger, yet lighter, than a billet

Picmod Technology:


The MOD 2 handguard has been equipped with the new PicMod Technology. This allows you to mount any KeyModTM attachment anywhere on your rail while being able to mount most Picatinny accessories directly to the rail in the areas where the PicMod feature is present.

This  gives you the most mounting options without having to use KeyModTM mounted Picatinny rail sections, adding unnecessary width and weight to your rifle.

Adjustable Gas Block:

Position 1 is recommended for for all types of ammunition and conditions when not using a suppressor.

Position 2 is for use with low powered ammunition when using a suppressor.

Position 3 is recommended for normal suppressor use with normal and high powered ammunition.



  • Weight – 4lb 5.7 oz
  • Barrel Length – 16.1″
  • Overall Length – 25″
  • Gas Piston System – Mid-Length
  • Barrel Twist – 1:8
  • Caliber- .223 Wylde

Additional Info

Additional Info

Manufacturer Primary Weapon Systems
Finish No
Barrel Length 16"
Caliber 5.56
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.