The killflash is intended for riflescopes with 50mm in diameter. The killflash matches Optisan and Discovery riflescopes with 50mm diameter.
The Discovery Optics is a young brand, originating in 2009. Originally, the company was dealing in the development of optical devices, telescopes, rangefinders, sights and cell phone optics. Later on, the producer managed to gather a few of important constructers from renowned collimator producers, after which the company started to produce high quality riflescopes for much more acceptable price, compared to the competitors. Thanks to their offer of flawless design, quality lenses and acceptably priced mechanics, Discovery quickly found a way to the clients all around the world.