SIG TREAD SIGHT RAIL MLOK BLK

Description

The SIG SAUER M-LOK Sight Rail is a factory replacement part designed specifically for the M400 TREAD rifle. If your original sight rail has been damaged or you are building out a TREAD from a stripped configuration, this is the correct OEM component rather than a generic substitute that may require fitment work to seat properly.

The rail is compatible with the M-LOK attachment system used on the TREAD’s handguard, which means it slots into the existing slots without any drilling or machining. M-LOK’s low-profile mounting geometry keeps the rail flush enough that it does not significantly add bulk when nothing is attached, while still providing a stable Picatinny interface for mounting a front sight, folding iron sight, or any other accessory that runs a standard cross-slot footprint. Because this is a factory-sourced component, it is machined to the same dimensional tolerances as what came on the rifle originally, which matters for sight-height consistency if you are using it as a co-witness base.

Hardware is included in the kit — screws and nuts — so installation does not require sourcing separate fasteners. The Black finish matches the standard TREAD handguard color. This is a straightforward replacement or upgrade part with a narrow, clearly defined purpose: restoring or adding a Picatinny sight rail to an M-LOK handguard on the M400 TREAD platform.