LG Sports: Fab Defense Rear Polymer Flip-Up Sight

Can be used as primary or back-up sight
Ergonomic angel-wing-shaped shroud helps center the image with any front sight and when used with a matching FAB Defense FBS Front Back-up Sight it creates a precise optical tunnel that ensures more accurate aiming and faster target acquisition
Dual apertures are 3mm for longer eye relief mounting low light and faster target acquisition; and 1.5mm for shorter eye relief mounting and greater accuracy; each is instantly selectable to match conditions
Low folded profile is smooth and inconspicuous and will not snag on gear webbing or brush
Instant spring-locked deployment mechanism will not slip break or deform
No tools needed for easy rapid windage adjustments with positive detent locking
Made of extremely durable high-grade polymer and metal