Have been experimenting with sighting on the BPS and may be I've gone a little OTT now! Up front I have a fibre optic tunnel, on top, an 11" B Square piccatinny rail with a parallax free, red/green multi reticule dot sight and underslung a 5mw daylight green laser. the fibre optic is visible through a channel in the rail so I can switch from one sight to another with ease. My reason, right handed and left eye dominant, looking for fast sight acquisition in IPSC matches. When I work out what's best for me I shall reduce the hardware, Promise!