Looking to replace my sights on my M&P shield 45 acp. After a lot of web serching finding it hard to find what i am looking for. May or may not exist yet. Searching for a set of night sights that have a very large red or orange front sight that fills the notch of the rear sight . Figure for a self defense gun want very fast acquisition of the front sight. Had a look at the Big dots but not crazy about the rear sight not having a notch in it.