I bought this for a sig556 rifle, the amber is quite visible at night and very bright during the day, though at dawn and dusk against lighter objects, the dot reticle is a bit hard to see, overall, a solid product that I would definitely reccomend.
Pros: Its alot easier to take on and off, it also has less bulk than the standard knobs
Cons: It doesnt fit all trijicon reflex sights, though it was easy enough to modify
This review was written in the old system and had content requirements that are different than reviews written today.