I bought a CZ 75 Shadow T to shoot specifically in IDPA. Two weeks prior to this year's Georgia IDPA Championship, I picked up a second CZ, a 75B converted to SAO, as my carry gun. It came with a FO front sight and a tactical rear sight. At the last minute, I chose to shoot the carry gun in the Georgia match. It ran like a top until half way though, the rear sight came loose. It took me two stages to figure out why I was missing the distance shots. We fixed it but, by that time, the match was over for me. That being said, I have no problem shooting the 75B in another match.