Maydaysan Airsoft recommends the SPECPRECISION Optic Fiber 4X32 CHEVRON Reticle Riflescope if you want to use an ACOG for airsoft. According to the company, this is a fibre optic illuminated prism scope featuring Horseshoe Dot, Chevron, or Crosshair reticle options. It includes an iron sight, eyepiece flip cover, and killflash. It offers a Fast Focus Eyepiece with adjustable diopter settings, making it ideal for nearsighted shooters, a feature the company says is not found in other brands.