C4 Rear Aperture Insert 500 which gives anglers the opportunity

which gives anglers the opportunity to adjust the layout of the box vertically and horizontally

- For still water use only

600 candela peak central intensity and 55 lumens measured system output

- Continuous Upper Rail: Yes

C4 Rear Aperture Insert 500 which gives anglers the opportunityThe Ultradyne C4 Rear Aperture Insert utilized Dynalign Technology allowing for a concentric sight picture. Dynalign's circle within circle sight picture allows for faster sight picture acquisition. The use of the front aperture further reduces parallax affect which makes accuracy less depend on precise sight alignment. Dynalign is a faster and more accurate sight picture that can improve your shooting performance. Designed specifically for Ultradyne