The Zenitco Perst-4 Green+ Visible/IR Laser is a high-quality laser sight it has a Picatinny rail mount, this laser sight is compatible with CR123A batteries and features both green and infrared lasers. The sleek black color and green reticle make it easy to target accurately in various shooting scenarios. The unit is powered by batteries and provides a reliable and precise. The unit holds zero very well and is great with NVG use.