If this thing worked reliably, I would give it a good review. It looks great, but after each shot on my .117 revolver, I have to bang it to get the light to come on again. Battery is fine, switch is not.
You get what you pay for and I paid cheap, I got cheap.
Pros: Cheap, looks good
Cons: On-off switch is very intermittent
This review was written in the old system and had content requirements that are different than reviews written today.