Mission First Tactical EXD Metal Rear BU Rifle Sight - Gray - MFT steel back up sights are designed for a minimalistic but rugged profile. Tucking under other equipment while maintaining a strong secure backup solution when optics and other accessories fail. Reduction in hardware increases the robust nature all while minimizing complexity and failure points. * Slim profile * Low profile bases- Easier to tuck under optics and forward rail mounted equipment * Manual flip up Arm * Fixed 300 meter zero * 02 Rear sight peep size (Fast & easy sight picture) * 4140 steel CNC construction (No cast parts) * Low profile adjustable rear windage * Nitride coated with corrosion resistant hardware