closing one’s eyes when firing? I think it is better to have a bright flashlight on it.
I have a UTG ELP38 on the barrel of my 870. It is blinding in a darkened room. I know because before mounting it, I had my wife test it on me in the dark living room with her on second story walkway and also ground level. It lights up an entire room with its spread.
I'm not concerned with it giving away my position because before the intruders can adjust with their puny flashlights, they are no longer active intruders.
Even though we are in California, we still have "castle" laws as long as the intruder is your home when you fire. However, you can not fire if the intruder is still working his way in and part of his body outside. You also can't fire if the intruder[s] are just casing your property.
We have a solid self-defense protocol from any room in our 3000 sq foot home. We have practiced it from all rooms.