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SIG SAUER rifles
deliverING next generation precision and performance trusted by law enforcement and military around the world.
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M400
The SIG SAUER M400 is a battle-proven direct gas impingement AR platform, engineered for superior reliability, accuracy, and modularity. At its core, the free-floating handguard features an innovative steel lockup system, minimizing deflection and ensuring maximum rigidity for consistent accuracy—even when fully outfitted with accessories. The precision-engineered 2-stage trigger offers a crisp, consistent 4.5-6.5 lb pull, enhanced by a flat blade design for optimal control and precision. To maximize durability and longevity, the M400 incorporates advanced performance coatings, making it the ideal rifle for law enforcement, military, and security professionals who demand unwavering performance.
M400
Precision, Durability, and Adaptability
Key Advantages of the SIG SAUER M400:
Proven & Trusted – The M400 platform has been adopted by U.S. and international law enforcement and special operations units, including the U.S. Department of Homeland Security. Its combat-proven reliability makes it a trusted tool for professionals worldwide.
User-Driven Design – SIG SAUER develops all firearms, machine guns, ammunition, and suppressors with direct input from military and law enforcement personnel. Through ongoing user assessments, field trials, and demonstrations, SIG SAUER ensures that every feature meets real-world operational needs—from ergonomics to functionality.
Future-Ready Modularity – The M400 is designed for full modularity, supporting next-generation enablers, accessories, and technologies. SIG SAUER understands that weapon platforms often outlast available enablers, so the M400 is built to evolve, integrating seamlessly with future advancements while maintaining an ergonomic, user-focused design.
With its combat-proven lineage, user-driven enhancements, and future-ready architecture, the SIG SAUER M400 is the ultimate AR platform for those who refuse to compromise on performance, adaptability, and reliability.
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CHOSEN THE WORLD OVER
COUNTRIES:
NOTABLE USERS OF THE M400 WORLDWIDE
California Highway Patrol
Indiana State Police
Jordan Public Security Directorate
Lincoln County Sheriff Department MD
DPS and Corrections
North Carolina State Highway Patrol
Philippines Armed Forces
Royal Oman Police
Sanford Police Department
U.S. Department of Homeland Security
U.S. Tennessee Valley Authority
Vermont State Police
Virginia State Police
Vogtle Nuclear Plant
Australia
Canada
El Salvador
France
Indonesia
Iraq
Israel
Italy Jordan Kosovo Malaysia Mexico Moldova Namibia
New Zealand Oman Philippines Puerto Rico Romania Slovenia South Africa
Switzerland Thailand Ukraine United Kingdom United States of America Zambia