Things I liked: Outstanding quality for the price point. Awesome value. Fits rail perfectly. Excellant tolerance, tight, solid snap-in fit, perfect switch placement, very bright laser, bright effective LED lights, very light weight with no effect noticed on pointing, easy adjustments to sight in the laser.. (installed on Beretta PX4 Storm.).
Things I would have changed: absolutely nothing. Don't mess with perfection!
Things I liked: lots of adjustments in every possible direction. very good workmanship. easy gun fitting, should last a long time.
What others should know: looks awesome!