Mission First Tactical Extreme Duty Rear Metal Back Up Sight Black. 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. Specifications for Mission First Tactical Extreme Duty Rear Metal Back Up Sight: Manufacturer: Mission First Tactical Color: Black Fabric/Material: 4140 Steel Gun Rail: Picatinny Features of Mission First Tactical Extreme Duty Rear Metal Back Up Sight Slim minimalist profile. Low profile bases - Easier to tuck under optics and forward rail mounted equipment. Positive detent in both the up and down positions. Fixed 300 meter zero. 02 Rear sight peep size (Fast & easy sight picture). Manual flip up arm. Adjustable windage with low profile knob. Nitride coated with corrosion resistant hardware. 1913 Picatinny Rail Mounted Package Contents: Mission First Tactical Extreme Duty Rear Metal Back Up Sight Mission First Tactical BUEXD-R: Extreme Duty Rear Metal Back Up Sight Black