Significant upgrade to stock iron sights - Trijicon HD XR Night Sight Set

Whilst the FN509 iron sights were not unusable, I was still looking for something a little better. The main selling point for this pair of sights for me was the fact that the front sight post is thin, giving the post a visible gap on either side when looking through the rear sight, which I like. The sights are bright at night and look excellent in the daytime. Another feature I like is the dark rear sight with the bright orange front sight post. (Or whatever color you buy) This contrast provides lightning fast front sight acquisition, which has greatly enhanced my speed and accuracy. Highly recommend!