I am gunsmithing these glow in the dark night sights onto my S-12 shotguns, all I needed was to drill and tap the gas block and I now have sights on my home defense shotgun that are highly visible for no/low light situations.
At 24 dollars these are a super value that I could not find for less, no where near it.
Pros: High vis. in no/low light
Cons: They are not free? lol
This review was written in the old system and had content requirements that are different than reviews written today.