This is a LUCID OPTICS Red Dot known as the HDX, model L-HDX.
This incredibly durable" predictably overbuilt" mid sized optic is breaking new ground in the "mid sized" red dot space. The HDx is built to take the rigors of competitive hard use at an accelerated pace with a clear" wide field of view for fast transitions between targets.
Features:
Waterproof
Shockproof
3 MOA