UPDATED FOR 2020- Now using the SB Tactical SBA3™

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 and is used heavily in law enforcement and SWAT settings.

MK107 MOD 1-M Specs:

Barrel Length: 7.75"

Caliber: .223 Wylde

Weight: 5 lb. 12 oz.

Length: 24.25-27.75"

Piston System: Pistol

Velocity: 2216 ft/sec

MK107 MOD 1-M Features:

PWS long stroke piston operating system

3-setting adjustable gas system

Forged upper and lower receivers

Included forward assist

Triad556 compensator

MLOK free float handguard

1:8 barrel twist rate

SB Tactical SBA3™

Radian Raptor Charging Handle