These indicators help a ton - Hornady Hit Target Impact Indicators

At longer distances it is a lot harder to confirm your hits on metal, there are times where the light helps a ton. Also after a handful of rounds at the same target your marking paint gets warn away and its hard to see the splash to confirm your hit, and with these you have another way to see you hit it. If your using regular ear plugs or muffs, or others shoot at the same, you can't always hear the metal ring. With these it doesn't matter, you can see an indication you hit. Just wish they came in a clear armor plated case.