MK1 MOD 1-M Uppers

The MK1 MOD 1-M line, revamped for 2018, features the PWS long stroke piston system. Internally, this line offers the tried and true system that PWS owners have grown to know and love. Featuring a free-float MLOK handguard, forward assist controls, and a more true to mil-spec design, the MK1 MOD 1-M line is a go-to for not only civilians, but also Law Enforcement. With the fully forged upper and lower receivers, the MK1 MOD 1-M is a no-nonsense tool for when you need a high value option that is relentless and unstoppable.

Out of stock? Please Contact PWS Customer Service to place a backorder or locate a dealer near you.

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7 Item(s)

  1. MK109 MOD 1-M Upper .300 BLK

    MK109 MOD 1-M Upper .300 BLK

    $1,049.95

    MK109 MOD 1-M Specs:

    SKU: 18-M109UB0B UPC: 811154030399

    Operating System: PWS Long Stroke Piston System, 3 setting Adjustable Gas Regulator

    Caliber: .300BLK

    Barrel Length: 9.75”

    Gas System Length: Pistol

    Barrel Twist Rate: 1:8

    Muzzle Velocity: 2216 fps

    Muzzle Device: PWS Triad 30 

    Upper Receiver: PWS Proprietary Piston Upper, T6 7075 Forged, Anodized

    Handguard: PWS M-Lok™ 6.9” Handguard (1.7” width, 2.25” height)

    Charging Handle: Radian Raptor™ Ambidextrous Charging Handle

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  2. MK111 MOD 1-M Upper .223 Wylde

    MK111 MOD 1-M Upper .223 Wylde

    $1,049.95

    MK111 MOD 1-M Specs:

    SKU: 18-M111UA0B, UPC: 811154030351

    Operating System: PWS Long Stroke Piston System, 3 setting Adjustable Gas Regulator

    Caliber: .223 Wylde

    Barrel Length: 11.85”

    Gas System Length: Carbine

    Barrel Twist Rate: 1:8

    Muzzle Velocity: 2741 fps

    Muzzle Device: PWS Triad 556 

    Upper Receiver: PWS Proprietary Piston Upper, T6 7075 Forged, Anodized

    Handguard: PWS M-Lok™ 6.9” Handguard (1.7” width, 2.25” height)

    Charging Handle: Radian Raptor™ Ambidextrous Charging Handle

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  3. MK107 MOD 1-M Upper .223 Wylde

    MK107 MOD 1-M Upper .223 Wylde

    $1,049.95

    MK107 MOD 1-M Specs:

    SKU: 18-M107UA0B UPC: 811154030344

    Operating System: PWS Long Stroke Piston System, 3 Setting Adjustable Gas Regulator

    Caliber: .223 Wylde

    Barrel Length: 7.75"

    Gas System Length: Pistol

    Barrel Twist Rate: 1:8

    Muzzle Velocity: 2216 fps

    Muzzle Device: PWS Triad 556 

    Upper Receiver: PWS Proprietary Piston Upper, T6 7075 Forged, Anodized

    Handguard: PWS M-LOK™ 7.1” Handguard (1.8” width, 2.1” height)

    Charging Handle: Radian Raptor™ Ambidextrous Charging Handle

    Learn More
  4. MK111 MOD 1-M Upper 7.62x39

    MK111 MOD 1-M Upper 7.62x39

    $1,049.95
    Looking for this item? Check out Fortress Tactical!
    Click here for current availability! Learn More
  5. MK114 MOD 1-M Upper .223 Wylde

    MK114 MOD 1-M Upper .223 Wylde

    $1,049.95

    MK114 MOD 1-M Specs:

    SKU: 18-M114UA0B UPC: 811154030368

    Operating System: PWS Long Stroke Piston System, 3 setting Adjustable Gas Regulator

    Caliber: .223 Wylde

    Barrel Length: 14.5”

    Gas System Length: Mid-Length

    Barrel Twist Rate: 1:8

    Muzzle Velocity: 2921 fps

    Muzzle Device: PWS FSC 556 (pinned & welded)

    Upper Receiver: PWS Proprietary Piston Upper, T6 7075 Forged, Anodized

    Handguard: PWS M-Lok™ 13.624” Handguard (1.7” width, 2.25” height)

    Charging Handle: Radian Raptor™ Ambidextrous Charging Handle

    Learn More
  6. MK114 MOD 1-M Upper .223 Wylde (NO COMPENSATOR)

    MK114 MOD 1-M Upper .223 Wylde (NO COMPENSATOR)

    $1,049.95

    The MK114 MOD 1-M does not have a pinned muzzle device. ALL NFA RULES APPLY.

    MK114 MOD 1-M Specs:

    SKU: 18-M114UA0BNC UPC: 811154030375

    Operating System: PWS Long Stroke Piston System, 3 setting Adjustable Gas Regulator

    Caliber: .223 Wylde

    Barrel Length: 14.5”

    Gas System Length: Mid-Length

    Barrel Twist Rate: 1:8

    Muzzle Velocity: 2921 fps

    Muzzle Device: No muzzle device included. All NFA rules apply. 

    Upper Receiver: PWS Proprietary Piston Upper, T6 7075 Forged, Anodized

    Handguard: PWS M-Lok™ 13.624” Handguard (1.7” width, 2.25” height)

    Charging Handle: Radian Raptor™ Ambidextrous Charging Handle

    Learn More
  7. MK116 MOD 1-M Upper .223 Wylde

    MK116 MOD 1-M Upper .223 Wylde

    $1,049.95

    MK116 MOD 1-M Specs:

    SKU: 18-M116UA0B UPC: 811154030382
    Operating System: PWS Long Stroke Piston System, 3 setting Adjustable Gas Regulator
    Caliber: .223 Wylde
    Barrel Length: 16.1”
    Gas System Length: Mid-Length
    Barrel Twist Rate: 1:8
    Muzzle Velocity: 2980fps
    Muzzle Device: PWS FSC 556
    Upper Receiver: PWS Proprietary Piston Upper, T6 7075 Forged, Anodized
    Handguard: PWS M-Lok™ 15.05” Handguard (1.7” width, 2.25” height)
    Charging Handle: Radian Raptor™ Ambidextrous Charging Handle

    Learn More

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7 Item(s)