Personally I choose blacked out suppressor height sights(all of them). Trijicon makes some good ones that are blacked out but still have tritium. Remember to loc-tite the mounting screws and to buy the proper sealing plate for the dot and change the battery every year. After spending a couple years carrying rds at work and training with them, I have switched back to irons due to less complexity and less added weight for my own personal needs. YMMV