Tony,
It just has a longer action
http://img694.imageshack.us/img694/1782/52460.jpg
http://img855.imageshack.us/img855/2002/p1306121457.jpg
this is just a rough guide
http://img547.imageshack.us/img547/1...ingerchart.gif
Also the T05 -T06 trigger kit is the same with the same piston,
the T01 stroke is longer because it has a shorter piston rod.