Gehmann 597 ISSF Crossover Rear Sight Prism brand_-Knifewizard the Wally Sox is designed

the Wally Sox is designed for low-maintenance

so it runs equally well on a single AA or CR123 battery — handy if you need to borrow batteries from another bit of kit in a pinch

rated to withstand hot contact testing at 300°C

Designed for professional use to protect against impacts and toe crush injuries

and equally at home on the school run or the daily commute

Gehmann 597 ISSF Crossover Rear Sight Prism brand_-Knifewizard the Wally Sox is designedThe Gehmann 597 ISSF Crossover Rear Sight Prism lets a target shooter with a defective or weak eye on their natural sighting side shoot instead with their good eye, without changing their stance or which shoulder the rifle is held from. Fitted between the rearsight iris and the eye, the prism displaces the sight line by 65mm centre to centre, carrying the aiming eye's view through to the standard sight picture with no physical change to how the target