Sig Sauer M400 Tread Sight Rail Kit - Black Aluminum Mount

The Sig Sauer KITTRDSIGHTRAIL transforms the M400 Tread rifle platform by adding a dedicated optics mounting rail system. This precision-machined sight rail addresses the need for reliable optics mounting on Tread series rifles without compromising the weapon's lightweight profile or handling characteristics.

What Makes This Different

Unlike generic Picatinny rails, this sight rail is engineered specifically for the M400 Tread's unique receiver geometry and weight distribution. The rail maintains zero retention through repeated mounting cycles and provides a rock-solid foundation for optics weighing up to 2 pounds. Standard aftermarket rails often introduce flex under recoil, but this OEM component maintains the structural integrity expected from Sig Sauer's engineering standards.

Key Features

• Precision-machined 6061-T6 aluminum construction with Type III hard coat anodizing
• MIL-STD-1913 Picatinny rail specification with proper slot spacing and dimensions
• Direct bolt-on installation to M400 Tread upper receiver without gunsmithing
• Low-profile design maintains rifle's streamlined appearance and balance
• Multiple mounting positions accommodate various optic sizes and eye relief requirements
• Corrosion-resistant black finish matches factory M400 Tread components
• Compatible with all standard Picatinny-mount optics and accessories

Field testing demonstrates this rail system maintains zero through temperature extremes from -20°F to 140°F. The mounting system handles the recoil impulse of standard 5.56 NATO loads without shifting or loosening. Competition shooters report consistent point of impact through extended firing sessions, while tactical users appreciate the rail's ability to maintain zero after weapon disassembly and reassembly. The anodized finish resists wear from repeated optic mounting and environmental exposure.

Technical Specs

• Material: 6061-T6 aluminum alloy with Type III hard coat anodizing
• Finish: Matte black anodized to match M400 Tread components
• Rail Standard: MIL-STD-1913 Picatinny with 0.206" slot spacing
• Mounting: Direct bolt-on to M400 Tread upper receiver
• Weight: Approximately 3.2 ounces
• Compatibility: Sig Sauer M400 Tread rifle series exclusively
• Country of Origin: United States
• Warranty: Sig Sauer limited warranty coverage

This OEM sight rail represents the most reliable optics mounting solution for M400 Tread owners who demand precision and durability. The factory engineering ensures perfect fitment and maintains the rifle's original design intent while expanding its tactical capabilities.