Is there anything to do to a Taurus PT92AR 9mm pistol?
Like where can you get different grips or springs,triggers ETC.

Why yes there is.  Glad you asked.  There is a good article on a lot of PT92 tune up at http://www.hobbygunsmith.com/Archives.htm  you want November 2003 through April 2004.  Also precision sights from http://www.precisionsights.com/tpu.html .  All I have done to mine is replace the rear sight with the TPU model and I love it!

I tried to put a cheap BSA laser sight ($30 from Academy) on the accessory rail, but couldn't keep it to hold a zero.  Very good for trigger pull practice however, it will teach you to shoot tight groups except not on the bullseye :-)