Hi,
For the SRC's here are the 5 differences between the Gen III and the Gen III Pro:
Gen III has tinted glass fiber lower receiver, Gen III Pro has
aluminum lower receiver
Gen III has M120 spring, Gen III Pro has
M140 spring
Gen III has 6.05mm tightbore barrels, Gen III Pro has
6.03mm super tight bore barrels
Gen III has steel gear set, Gen III Pro has
helical cut steel gear set
Gen III has regular motor pinion gear, Gen III Pro has
CNC steel motor pinion gear.
For these 5 upgrades, you are only paying $50 more.
We are required to put in M140 springs into the full metal Gen III Pro's, otherwise they are prohibited for import (metal lower makes these replica firearms if shooting lower than 430fps).
For details of what internals the Gen III Pro's come with, please see the STANDARD FEATURE list on the top of this page here:
http://www.007airsoft.com/products/h...16-gen3pro.htm
I don't know the detailed specs about the ICS guns in Canada, however, I do know that to accommodate the split gear box (which is brilliant by the way), the receivers of the guns are made to be longer than the real size. If you are not an avid gun collector though, you shouldn't mind the difference.
Ken