This item is a factory replacement sight rail for the M400 TREAD. Installs on the M400 Tread handguard and allow the co-witness of the Sig TREAD back-up iron front sight.
- Comes with screws and nuts.
- For the Sig Sauer M400 TREAD MLOK rail
- Compatible with all M-LOK rail systems
- Material: Aluminum
- Finish: Anodized Black
