Sleek killflash ARD compatible with Eotech 5 Series and EXPS optics. This Flashkill also has retaining clips to help keep it in place and prevent it from coming out. Thin enough that you can still use a rubber optic cover! Requires removing 3 screws on the steel hood, placing the flashkill on the optic and then sliding the hood back over it and putting the 3 screws back in. Made and designed in the USA! PREMIUM MATERIAL: PA6-CF Carbon Fiber Nylon. Extremely durable, impact and heat resistant material. Not cheap plastic like others use. TOTALLY FLAT MATTE FINISH!