Sig Sauer Tread 15-inch M-LOK Free-Float Handguard

This 15-inch Sig Sauer Tread M-LOK handguard is a free-float, factory-length replacement designed for the M400 Tread series. It features lightening cuts and a two-screw installation method for direct replacement on TREAD rifles. Constructed from anodized aluminum and finished in black, the handguard accepts M-LOK accessories for modular upgrades. While it is compatible with other AR-15 pattern rifles, installation on non-Sig platforms requires a compatible barrel nut, which is not included.

Key Specifications

• The finish is Anodized.
• The material is Aluminum.
• The color is Black.
• The length is 15 inches.
• The product type is Free Float.
• The mounting interface is M-LOK.
• The handguard is listed for the M400 Tread firearm model.
• The make is Sig Sauer.
• The model name is Tread.
• The installation method is a two-screw replacement for TREAD rifles.

Built to provide a stable, lightweight platform for accessories and hand placement, the Tread 15-inch M-LOK handguard delivers practical modularity and clean lines for AR-style builds based on the Sig M400 Tread. Its free-float design supports consistent barrel performance while the M-LOK interface keeps accessory mounting streamlined and tool-friendly. For shooters who value a purposeful, no-nonsense upgrade, this handguard offers a durable, functional solution in a familiar layout.