Absolutely safety is the MAIN concern. As I said, Glock makes a gun just for simunition. The polymer portion of the gun is a light blue. I'm sure it's expensive and don't know of the availability to civilians or of the ammo's availability. I've never seen the glock pistols advertised but that is what my dept. owns. There are also some training schools that advertise the use of simunitions in classes if that is an option to you.
I've got some plans for retirement in this area but not for some time yet. Sorry.
Good luck in your training,
If not you, then who?