M&P Parts Retailers

I'm in search for factory spare parts:

9c
recoil springs (factory) seem to be not listed anywhere or my google-fu is on a vacation.
MA trigger springs
Locking block

9fs
recoil springs (factory)
MA trigger springs
Locking block

M&P22
trigger springs-I would like to make it a heavier pull to practice with.
If you have seen info on this I would love a redirect!

The only place I have found as a good resource has been Speed Shooters Specialties, but they only show two items for the 9c.

I realize parts commonalty but recoil springs (factory) are not one of them.

Any help will be very much appreciated.

Thanks Gals and Gents.

M&P Compact Guide Rod Assembly: http://goo.gl/MvBMV

http://www.brownells.com/.aspx/pid=0.../MP-Semi-Auto-

Thanks!

Google and Kindle Fire for some reason don't like each other.