The Stache IWB is a technologically advanced, modular concealed carry holster system designed by concealed carriers for concealed carriers, out-performing the design and material limitations of Kydex. Constructed of impact-reinforced, injection molded polymer, it is made in the USA, ambidextrous and adaptable for right or left hand carry, with a low profile shirt guard that adds comfort without inhibiting the draw stroke. It can be adapted into several modular configurations or carry positions, is compatible with handgun-mounted RDS optics, and works with an assortment of Stache IWB carry accessories.