The Mission First Tactical Flip Up Rear Sight in Black delivers a low profile, snag resistant design with a shroud that protects the aperture from debris and impact damage, while its dual peep, same plane aperture enables precise co-witness and fast target acquisition. This rear sight offers a unique closure that allows either aperture to be deployed and can fold to the rear in the correct direction if dropped, enhancing reliability in field or range scenarios. It is designed to work seamlessly with all standard height front sights and is manufactured using a specially developed Military Grade reinforced, super tough polyamide for enduring performance. Improvements include a redesigned rail clamp nut to prevent spin out when overtightened, a transition to higher strength plastic components, and a redesigned retaining pin for the cover to prevent it from slipping out of position, all contributing to long-term durability and consistent zero. Weighing only 0.5 ounces with a height of 0.879 inches, this Mission First Tactical sight is an ideal upgrade for hikers, shooters, and operators seeking a robust, dependable rear sight that co-witnesses cleanly while maintaining a slim profile.