The .300 Blackout platform is a great system to use for tactical and covert purposes. With the option to shoot subsonic or supersonic ammunition, it really provides great versatility in the field. Of course, since it was intended more for law enforcement and tactical applications, you will want to look for a holographic sight. Among the options on the market today, this EOTech XPS2-300 Holographic Weapon Sight has what you need.
Designed for use with your .300 Blackout rifle, this quality EOTech sight is built to the same quality you would expect from such a trusted company. It is meant to be used with a 1” Weaver or Mil-Std-1913 rail, which makes it easy to attach to any of your standard battle rifles. Its single 123 lithium battery provides up to 600 hours of life at nominal setting. Submersible up to 10 feet, it should resist any water you encounter with ease while the 9 ounce carry weight keeps your weapon nice and light. As a helpful feature, it uses a dual reticle design, which offers aiming points for both subsonic and supersonic ammo.
If you are looking for a great holographic sight to pair up with your 300 Blackout rifle, this is sure to provide everything you are looking for and more.