Primary Weapons Systems Introduces the MK107 MOD 2-M: Compact Size, Full-Spectrum Performance

Boise, ID (August 3, 2026) – Primary Weapons Systems (PWS) is proud to announce the release of the new MK107 MOD 2-M, a compact .300 Blackout Personal Defense Weapon (PDW) engineered to deliver exceptional reliability, suppressor compatibility, and maneuverability in confined environments.

Built around the proven PWS long-stroke piston operating system, the MK107 MOD 2-M combines the durability and reliability of the AK-style piston concept with the familiar ergonomics and modularity of the AR platform. The result is a highly capable compact rifle designed for professional users, home defense applications, and enthusiasts seeking maximum performance from a compact package.

At the heart of the MK107 MOD 2-M is a premium 7.75-inch 416 stainless steel barrel chambered in .300 Blackout. Finished with a durable black nitride treatment and featuring a fast 1:5 twist rate, the barrel is optimized to stabilize both subsonic and supersonic projectiles while delivering outstanding performance on the compact platform. A standard 5/8×24 muzzle thread provides compatibility with a wide range of muzzle devices and suppressors.

The rifle’s renowned PWS long-stroke piston system features a three-position adjustable gas regulator, allowing users to tailor the operation for suppressed or unsuppressed use and for different ammunition types. Unlike traditional direct-impingement systems, the PWS design vents excess gas forward, helping reduce fouling within the action while keeping critical internal components cooler and cleaner. The result is enhanced reliability and reduced maintenance requirements, particularly during extended firing schedules and suppressed operation.

The MK107 MOD 2-M features a forged 7075-T651 upper and lower receiver set, providing exceptional strength and incorporating modern enhancements. The ambidextrous lower receiver features integrated bolt and magazine release controls, enabling efficient operation from either side of the firearm. Premium controls come standard, including a Radian Raptor charging handle and a Radian Talon ambidextrous safety selector, providing fast, intuitive manipulation under demanding conditions.

Further enhancing versatility is the proprietary PWS Pic-LOK® rail system, which combines M-LOK® attachment capability with Picatinny rail sections machined directly into the handguard, providing a streamlined, durable mounting solution. The rifle is also equipped with the PWS FRC 2-Port Compensator, designed to reduce recoil and muzzle movement while maintaining compatibility with PWS PUB suppressor mounts and other popular HUB-compatible taper adapters.

To maximize portability, the MK107 MOD 2-M utilizes the Q LLC Shorty Stock and Buffer System, creating an exceptionally compact footprint without sacrificing performance or shootability. Finished in a striking OD Green Cerakote®, the rifle combines rugged durability with a distinctive appearance.

Weighing just 5.2 pounds, the MK107 MOD 2-M delivers the compact dimensions demanded by modern PDW users while retaining the reliability, control, and suppressor-ready performance that have become hallmarks of the PWS brand.

For more information on the new MK107 MOD 2-M and the complete line of Primary Weapons Systems firearms, visit primaryweapons.com.

MK107 MOD 2-M

Features:

• PREMIUM BARREL: 416 SS nitride-coated 7.75” 300 Blackout with 1:5 twist and 5/8-24 muzzle thread.
• RAIL SYSTEM: PWS Pic-LOK® rail combines M-LOK® with Picatinny rail machined directly into the handguard.
• GAS ADJUSTMENT: Our legendary long-stroke piston system features a 3-position gas adjustment knob.
• SUPPRESSOR OPTIMIZED: The long-stroke piston system bleeds off excess gas, preventing fouling from entering the action and keeping internal parts cooler, with less maintenance needed between patrols.
• MOD 2-M UPPER: 7075-T651 Forged MOD 2-M proprietary upper featuring forward assist.
• MOD 2-M LOWER: 7075-T651 Forged MOD 2-M lower features ambidextrous bolt release and magazine release.
• PREMIUM CONTROLS: Outfitted with a Radian Raptor charging handle and Radian Talon ambidextrous safety selector for fast, intuitive weapon manipulation from either side.
• TRIGGER: MIL-SPEC Enhanced, PTFE Coated 5.5-6.5 LBS pull weight.
• CQB STOCK: Equipped with Q LLC Shorty Stock for minimal length when collapsed.
• FRC COMPENSATOR: Designed for recoil and flash mitigation, the FRC is also compatible with PWS PUB suppressor mounts and other popular HUB taper adaptors.
• BUFFER SYSTEM: Utilizes Q LLC Shorty Buffer system.
• CERAKOTE FINISH: Receivers and handguard finished with OD Green Cerakote.

Specs:

• Caliber: 300 BLK
• Barrel Length: 7.75″
• Gas Length: Pistol
• Twist Rate: 1:5
• Weight: 5.2 lbs
• Muzzle Device: FRC 2 Port
• Exterior Finish: OD Green Cerakote, Black Nitride
• SKU: MK1-M2R-300-7-OD-NFA

About Primary Weapons Systems

Primary Weapons Systems, Inc. (PWS) is a federally licensed firearms manufacturer based in Boise, Idaho, specializing in tactical and sporting rifles and accessories. We machine our components in-house on state-of-the-art CNC equipment and source any additional parts from trusted, top-tier partners. As a company of shooters, from machining and assembly to quality control and support, we build products that are both highly functional and visually refined. Our mission is to deliver exceptional quality and customer service to shooters, sportsmen, military, and law enforcement at a fair, competitive price. We value long-term customer relationships and welcome direct feedback by phone or email.

For more information, visit www.primaryweapons.com