The sights are great...once they are on. I gave them a 4 because the install is rough. I work on guns so I am not an amature at installing these sights. The PX4 storm sights where very hard to remove. They are basically a press fit and I had to bang the crap out of them to get them off. The new night sights where hard to install as well. Had to file and bang on them to get them on and located. Tolerences on both the old and new are way to tight. I would rather have a looser fit with a set screw for ease of install so folks can swap there own sights easly an not pay for an install. But if your PX4 Storm doen't have night sights I would buy these. Great addition to a very good gun.
Pros: very bright
Cons: Install was hard
This review was written in the old system and had content requirements that are different than reviews written today.