Sig Sauer OFF-DUTY MCX .300 Blackout SBR 9" Barrel - 30 Rd

Sig Sauer OFF-DUTY MCX .300 Blackout SBR 9" Barrel - 30 Rd

SIG SAUER’S OFF-DUTY Program Form, Click Here

When the mission demands absolute precision, whisper-quiet operation, and relentless reliability, the Sig Sauer MCX Short Barrel Rifle (SBR) answers the call. Engineered from the ground up around the .300 Blackout cartridge and suppressor-optimized performance, the MCX isn't an adaptation of an existing platform — it's a purpose-built weapon system that redefines what a modern tactical rifle can be.

Whether you're transitioning seamlessly between supersonic and subsonic loads with a single lever flip, or swapping calibers in minutes to meet a changing mission profile, the MCX puts unmatched versatility in your hands. Its revolutionary bufferless recoil system eliminates the constraints of a traditional AR buffer tube, unlocking a side-folding stock that makes this SBR as compact and maneuverable as it is lethal. With fully ambidextrous controls, a two-stage match trigger, and a Picatinny top rail ready for your preferred optic or light, the MCX SBR is the complete package — straight out of the box.

Suppressor-Optimized Design
Purpose-built around the .300 BLK cartridge and suppressed fire, delivering superior sound reduction and enhanced cycling reliability with both supersonic and subsonic ammunition.

Two-Position Gas Block
Instantly switch between subsonic and supersonic loads with a simple lever flip — no tools, no downtime, no compromise in performance.

Bufferless Recoil System
A groundbreaking recoil design eliminates the need for a buffer tube, enabling a true side-folding stock for reduced overall length and enhanced maneuverability in tight environments.

Fully Ambidextrous Controls
Safety selector, magazine release, and charging handle are all fully ambidextrous, ensuring fluid operation regardless of shooting hand or tactical situation.

M-LOK Aluminum Handguard: A lightweight, durable aluminum M-LOK handguard allows for modular accessory attachment exactly where you need it — lights, lasers, grips, and more.

Two-Stage Match Trigger
A precision two-stage trigger delivers a crisp, consistent break for improved accuracy and shooter confidence in both field and competition settings.

Picatinny Top Rail
Full-length optic-ready top rail accommodates a wide range of sights, red dots, magnified scopes, and night vision devices for mission-adaptable target acquisition.

Folding Iron Sights
SIG SAUER folding iron sights provide a reliable backup aiming solution without adding unnecessary bulk to the platform.

Specifications

• Caliber: .300 BLK (300 Blackout)
• Barrel Length: 9 Inches
• Barrel Material: Carbon Steel
• Twist Rate: 1:5
• Thread Pattern: 5/8x24 TPI
• Trigger: Two-Stage Match
• Handguard: M-LOK Aluminum
• Sights: Folding Iron Sights (Removable)
• Top Rail: Picatinny
• Stock: Side-Folding (Bufferless System)
• Controls: Fully Ambidextrous (Safety, Magazine Release, Charging Handle)
• Magazine Compatibility: Standard STANAG
• Capacity: 30+1 Rounds
• Magazines Included: One (1)
• Color: Black
• Weight: 7 lbs

Qualifying Credentials for Sig Sauer OFF-DUTY Program:

• Active-duty military with an active-duty identification
  
• Retired military with retired military credentials
  
• Honorably discharged veterans (requires DD214 or Veteran designation on state-issued ID)
  
• Active reservists with military identification
  
• Active national guard with military identification
  
• Corrections officer (including parole and probation officers)
  
• Sworn law enforcement officers (including federal, state, and county)
  
• Retired law enforcement officers with “retired” credentials
  
• Active or retired law enforcement with official agency credentials
  
• Court officers with official agency credentials or official documentation
  
• State / County / City Coroners with official agency credentials or official documentation
  
• Full time first responders with current credentials or official documentation
  
• EMT’s, Firefighters, Volunteer Firefighters, and Paramedics.
  
• State-Licensed Security Professionals