The Eagle Vision Sigma M31 redefines what a modern airgun suppressor can be. Instead of forcing shooters into a fixed-caliber design, the Sigma M31 was engineered as a modular suppression system capable of adapting to multiple calibers and rifle platforms with precision.
At the core of the M31 is Eagle Vision’s innovative interchangeable liner system. Unlike conventional moderators that require complete disassembly or compromise with oversized bores, the Sigma allows shooters to quickly swap caliber-specific internal liners in seconds without opening the suppressor body. This creates a tighter internal bore match for improved airflow control, superior sound suppression, and reduced turbulence across multiple calibers.
Manufactured using precision CNC machining with tolerances as tight as +/- 0.02mm, the Sigma M31 combines lightweight anodized aluminum construction with a sophisticated dual-tube internal architecture wrapped in ballistic fiber felt and stainless steel mesh. The result is highly effective air dissipation, excellent suppression performance, and consistent projectile stability on high-performance PCP air rifles.
Its slim 31mm profile makes it ideal for rifles with low-mounted optics, compact hunting builds, and shrouded barrel systems where larger moderators may create clearance issues.
Specifications:
• Overall Length: 181mm
• Diameter: 31mm
• Weight: 124 grams
• Construction: Precision CNC-machined anodized 6061 aluminum
• Internal Design: Dual-tube architecture with ballistic fiber felt and stainless steel mesh
• Modularity: Tool-less interchangeable liner system
• Included Liners: .177, .22, and .25 caliber
• Compatible Calibers: .177 through 9mm
• Thread Options: 1/2 UNF, M14, M18, M20, and Quick-Detach options
• Additional Features: Stainless steel air strippers and vibration-dampening O-ring retention system
The Sigma M31 is the ideal solution for shooters running multiple rifles who want a single suppressor platform capable of adapting to different calibers and thread systems without sacrificing performance. Whether you are shooting precision .177 target rifles, compact .22 carbines, or powerful .30 caliber hunting platforms, the Sigma M31 delivers caliber-specific suppression performance in one highly refined system.
AIRGUN USE ONLY. Not designed or intended for firearm use.