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.

MK107 MOD 1-M Upper 7.62x39

$1,049.95
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THE DIABLO

MK107 MOD 1-M Specs:

SKU: 18-M107UF0B, UPC: 811154030412

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

Caliber: 7.62x39

Barrel Length: 7.75"

Gas System Length: Pistol

Barrel Twist Rate: 1:8

Muzzle Velocity: 1944 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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MK114 MOD 1-M Upper .223 Wylde

$1,049.95
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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
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MK114 MOD 1-M Upper .223 Wylde (NO COMPENSATOR)

$1,049.95
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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
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MK116 MOD 1-M Upper .223 Wylde

$1,049.95
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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
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MK116 MOD 1-M Upper 7.62x39

$1,049.95
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MK116 MOD 1-M Specs:

SKU: 18-M107UF0B, UPC: 811154030436

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

Caliber: 7.62x39

Barrel Length: 16.1"

Gas System Length: Carbine

Barrel Twist Rate: 1:8

Muzzle Velocity: 2374 fps

Muzzle Device: PWS Triad 30

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

Handguard: PWS M-Lok™ 15.0” Handguard (1.7” width, 2.25” height)

Charging Handle: Radian Raptor™ Ambidextrous Charging Handle
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MK109 MOD 1-M Upper .300 BLK

$1,049.95
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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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MK111 MOD 1-M Upper .223 Wylde

$1,049.95
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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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MK107 MOD 1-M Upper .223 Wylde

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$1,049.95
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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
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MK111 MOD 1-M Upper 7.62x39

$1,049.95
Out of stock
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MK111 MOD 1-M Specs:

SKU: 18-M111UF0B, UPC: 811154030429

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

Caliber: 7.62x39

Barrel Length: 11.85”

Gas System Length: Carbine

Barrel Twist Rate: 1:8

Muzzle Velocity: 2204 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
Learn More