When I decided to add a similar sight to my CZ75BD, I figured that rather than me beating on it haphazardly with a hammer & punch, it was better for all concerned to pay the money and have a gunsmith do it correctly. Mine was tight enough that unwanted movement isn't a worry.
MSgt, USAF, Retired
NRA Life Member
The hardest thing to explain is the glaringly evident which everybody had decided not to see. - Ayn Rand