The only sight I know of that fits the front is from Dawson, but it fell off after 50 shots. As for the rear, it needs something straight up, and I don't know if anyone would be able to do something for it, as the FO needs some tube length to collect light.

With as many people buying these however, someone may get clever. I saw that Williams has a FO with a "U" shape FO tube, and so it is rather thin. Maybe since S&W has them on their "aftermarket" vendor list, they may step up.