The Costa Ludus sights were designed with direction from Chris Costa, based on his extensive background with the United States Coast Guard and as a firearms instructor. These sights have several unique features that set them apart from other Night Fision sights. Most notably, there are serrations on the front and rear sights to reduce glare. There are also serrations on the front edge of the rear sight to maximize one-handed manipulation. Costa Ludus sights include a proprietary Night Fision Perfect Dot® in the front sight and a horizontal tritium bar in the rear sight. The tritium bar gives the shooter a clear distinction between the front and rear sights in low light conditions. The rear sight is also cut to maximize the target picture for fast acquisition.
These offer an extreme low profile co-witness. They are recommended for use with a Holosun c-series or Trijicon RMR Type 2 mini-red dot optic. It is highly recommended you compare the blade height with your optic housing height to ensure where they fall in your window.