The sites are pretty nice. They make the orange around the front site so it will glow slightly in low light for you to be able to acquire the front site easier. However the only way I have been able to achieve this is to shine a flashlight on it first. Of course in a practical engagement this won't be happening so the idea of you having HD sites at dusk or night isn't going to happen. However during the day the Orange surrounding the front site makes it very easy to acquire the front site.
Pros: easy to aquire site picture at night
Cons: you have to hit the front site with a flashlight for the orange to glow for quicker site acquisition
This review was written in the old system and had content requirements that are different than reviews written today.