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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8 Item(s)

  1. Sale

    MK111 MOD 1-M Upper 7.62x39

    MK111 MOD 1-M Upper 7.62x39

    Regular Price: $1,049.95

    Special Price $949.95

    Looking for this item? Check out Fortress Tactical for the largest selection and best pricing on 7.62x39!
    Click here for current availability! Learn More
  2. Sale

    MK111 MOD 1-M Upper .223 Wylde

    MK111 MOD 1-M Upper .223 Wylde

    Regular Price: $1,049.95

    Special Price $892.46

    The MK1 MOD 1-M line 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.

    What PWS-aficionado’s refer to as the “ideal rifle”, the MK111 MOD 1-M is perfect for shooters looking for a weapon with endless uses. Maintaining the shortest barrel length recommended for suppressed use, this compact rifle is one of the most popular from LE to heli-hunting. 

    MK111 MOD 1-M Specs:

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

    Caliber: .223 Wylde

    Barrel Length: 11.85"

    Barrel: 41V50, Button Rifled

    Barrel Twist Rate: 1:8

    Muzzle Velocity: 2741 fps

    Muzzle Device: PWS Triad 556 Compensator for flash suppression and muzzle stabilization without overpressure

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

    Handguard: PWS M-LOK™ 11.1” Handguard (1.8” width, 2.1” height)

    Charging Handle: Radian Raptor™ Ambidextrous Charging Handle

    Overall Length: 20.5”

    Overall Height: 2.25”

    Overall Width: 2.5”

    Overall Weight: 4 lbs. 1 oz.

    Piston System: Carbine

    MK111 MOD 1-M Features:

    Included forward assist

    Triad556 compensator

    MLOK free float handguard

    Learn More
  3. Sale

    MK114 MOD 1-M Upper .223 Wylde

    MK114 MOD 1-M Upper .223 Wylde

    Regular Price: $1,049.95

    Special Price $892.46

    The MK1 MOD 1-M line 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.

    The MK114 MOD 1-M, developed after the M4 pattern, is the go-to item for shooters wanting a compact rifle without the NFA paperwork. Having a pinned muzzle device, the MK114 MOD 1-M has been described as the ideal straight out of the box rifle for the average customer.

    We also sell a MK114 MOD 1-M with no compensator. All NFA rules apply. 

    MK114 MOD 1-M Specs:

    Caliber: .223

    Weight: 4 lb. 8 oz.

    Length: 23.5"

    Piston System: Mid-length

    Velocity: 2921 ft/sec

    MK114 MOD 1-M Features:

    PWS long stroke piston operating system

    3-setting adjustable gas system

    Forged upper reciver

    Included forward assist

    FSC556 compensator

    MLOK free float handguard

    1:8 barrel twist rate

    Radian Raptor Charging Handle

    Learn More
  4. Sale

    MK107 MOD 1-M Upper .223 Wylde

    MK107 MOD 1-M Upper .223 Wylde

    Regular Price: $1,049.95

    Special Price $892.46

    The MK1 MOD 1-M line 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.

    The shortest available option in the MK1 MOD 1-M series, the MK107 was the first firearm developed by PWS. Known as “The Diablo”, the MK107 was designed to replace MP5 style weapons. Used heavily in law enforcement and SWAT settings, the MK107 has been a vital part in the growing use of SBRs as patrol rifles.

    MK107 MOD 1-M Specs:

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

    Caliber: .223 Wylde

    Barrel Length: 7.75"

    Barrel: 41V50, Button Rifled

    Barrel Twist Rate: 1:8

    Muzzle Velocity: 2216 fps

    Muzzle Device: PWS Triad 556 Compensator for flash suppression and muzzle stabilization without overpressure

    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

    Length: 17"

    Height: 2.25”

    Width: 2.5”

    Weight: 3 lb. 8 oz.

    Included forward assist

    Triad556 compensator

    MLOK free float handguard

    Learn More
  5. Sale

    MK116 MOD 1-M Upper .223 Wylde

    MK116 MOD 1-M Upper .223 Wylde

    Regular Price: $1,049.95

    Special Price $892.46

    The MK1 MOD 1-M line 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.

    The MK116 MOD 1-M is one of the most popular firearms PWS manufactures. Being a go-to for Law Enforcement communities looking for non-NFA items, this rifle can be seen in-use by over 85 LE communities in the United States. 

    MK116 MOD 1-M Specs:

    Caliber: .223

    Weight: 4 lb. 11 oz.

    Length: 25"

    Piston System: Mid-length

    Velocity: 2980 ft/sec

    MK116 MOD 1-M Features:

    PWS long stroke piston operating system

    3-setting adjustable gas system

    Forged upper receiver

    Included forward assist

    FSC556 compensator

    MLOK free float handguard

    1:8 barrel twist rat

    Radian Raptor Charging Handle

    Learn More
  6. Sale

    MK109 MOD 1-M Upper .300 BLK

    MK109 MOD 1-M Upper .300 BLK

    Regular Price: $1,049.95

    Special Price $892.46

    The MK1 MOD 1-M line 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.

    For 2018 PWS brings back the original MK109 in 300BLK. The 9.75" barrel length provides excellent reliability with a range of ammunition and still function well, with or without a suppressor and without the need for an adjustable gas system. The MK109 makes a great choice as an SBR or a pistol.

    MK109 MOD 1-M Specs:

    Barrel Length: 9.75"

    Caliber: .300BLK

    Weight: 3 lb. 10 oz.

    Length: 18.75"

    Piston System: Pistol

    Velocity: 2264 ft/sec

    MK109 MOD 1-M Features:

    PWS long stroke piston operating system

    Non-adjustable gas system

    Forged upper receiver

    Included forward assist

    Triad30 compensator

    MLOK free float handguard

    1:8 barrel twist rate

    Radian Raptor Charging Handle

    Learn More
  7. Sale

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

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

    Regular Price: $1,049.95

    Special Price $892.46

    The MK1 MOD 1-M line 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.

    The MK114 MOD 1-M does not have a pinned muzzle device. ALL NFA RULES APPLY. We also sell the MK114 MOD 1-M with a pinned compensator that is NFA- compliant.

    MK114 MOD 1-M Specs:

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

    Caliber: .223

    Barrel Length: 14.5”

    Barrel: 41V50, Button Rifled

    Barrel Twist Rate: 1:8

    Muzzle Device: Not Installed. All NFA Rules Apply

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

    Handguard: PWS M-Lok™ 13.6” Handguard (1.8” width, 2.1” height)

    Charging Handle: Radian Raptor™ Ambidextrous Charging Handle

    Overall Length: 21.75”

    Overall Height: 2.25”

    Overall Width: 2.5”

    Overall Weight: 4 lbs. 6 oz.

    MK114 MOD 1-M Features:

    Reduced Diameter Barrel Seat for Improved Mechanical Fit Over Mil-Spec

    Bolt Carrier Group and Piston Assembly is FNC LIFE HD ® salt-bath nitride treated to deliver a lifetime of service and durability

    Bolt and cam pin are polished nickel PTFE coated for ease of maintenance and cleaning

    Standard M4 Pattern controls that includes Forward Assist

    No compensator

    MLOK free float handguard

    Learn More
  8. Sale

    MK116 MOD 1-M Upper .300 BLK

    MK116 MOD 1-M Upper .300 BLK

    Regular Price: $1,049.95

    Special Price $892.46

    DISCONTINUED AS OF 2020. ONLY 1 LEFT!

    The MK1 MOD 1-M line 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.

    The MK116 MOD 1-M is one of the most popular firearms PWS manufactures. Being a go-to for Law Enforcement communities looking for non-NFA items, this rifle can be seen in-use by over 85 LE communities in the United States. 

    MK116 MOD 1-M Specs:

    Caliber: .300 BLK

    Weight: 4 lb. 6 oz.

    Length: 25"

    Piston System: Pistol

    Velocity: 2481 ft/sec

    MK116 MOD 1-M Features:

    PWS long stroke piston operating system

    Non-adjustable gas system

    Forged upper receiver

    Included forward assist

    Triad30 compensator

    MLOK free float handguard

    1:8 barrel twist rate

    Radian Raptor Charging Handle

    Learn More

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