This video explains the function of focusing caps on night vision devices. By reducing the aperture, these caps increase the depth of field, allowing for clearer focus on both near and far objects simultaneously. While they limit light intake, they are generally beneficial for target identification and observation in tactical scenarios, especially when using an illuminator.
You've reached the end! 1 videos loaded.
Gun Laws by State
Read firearms regulations for all 50 states + D.C.
Find Gun Dealers
Search licensed FFL dealers near you.