I've had my new Rami BD for 2 week and have fired a little over 600 rounds of 124gr gold dots and several types and weights of FMJ ammo. I love this pistol it feels right in my hand and is very accurate out to 25 yards. Now for the bad news at about 550 rounds the front sight lost it's glow it just died.
I talked with the good folks at CZ and they want me to send them my slide so they can replace the sight. Well the Fed Ex truck is pulling away with my Rami it's going to be a long couple weeks.
The Rami night sights are made by Meprolite and they basically suck balls.
I have had many Meprolite sights go dead in one or more tritium vials. The sights themselves are made of really cheap, soft metal and gets nicked up pretty easily and have had them get bent or broken on other guns when trying to install them. In a word, they just plain SUCK.
I've found Trijicons to be of MUCH better quality across the board with longer lasting tritium inserts. Unfortunately, Trijicon does not make night sights specifically for the Rami, although you could use a standard CZ75 rear sight (fits the rear dovetail though doesn't extend back as far) and a Novak type front sight (the Rami uses a Novak-cut front dovetail).
Also, CZ Custom sells Trijicon Tactical rear night sights for the CZ 75 that are not shown on the Trijicon website. These should work, too, and move the tritium vials farther back. However, for some strange reason, the RAMI has a step down on the rear of its slide under the sight, so if you used the standard 75 Tactical sight, there'd be a gap between the bottom of the sight and the rear-most top of the slide. Not a big deal, I wouldn't think.
https://czcustom.com/cz-parts-all/front-and-rear-sights/rear-sights.html?ETA: The Shadow Tactical rear night sight might fit on a RAMI, as it also requires a step down at the rear of the slide.
Various CZ75 rear sight dovetail profiles:
http://www.czfirearms.us/index.php?topic=78992.msg580299#msg580299
