Sig Sauer M400 Tread Sight Rail M-LOK Picatinny 4-Slot 1.90"

The Sig Sauer Sight Rail is a factory replacement Picatinny rail section built specifically for the Sig M400 Tread AR-platform rifle. The compact 1.90" rail installs directly into the handguard's M-LOK interface, giving you a solid 1913 Picatinny mounting point for a red dot, an offset iron sight, or a small backup optic without eating up valuable top rail space.

Machined from aluminum and finished in a low-glare matte black hard coat anodized coating, the Sight Rail matches the fit and finish of the original M400 Tread equipment. The section provides 4 Picatinny slots, plenty of room for most micro red dots and clamp-style backup iron sights. As a genuine factory Sig Sauer part, it is purpose-built to drop into the M400 Tread handguard with no adapter or modification required. Rings are not included.