Here are some comparison pics I took today. Of course, any decent gun shop will have them on hand to pick up and look at. 
Glock 34 with lightened slide and solid barrel:
Stock Glock 19:
A compensated G23C where you can see the much smaller slide cut outs and small slots in the barrel itself than a G34/35:
Yes, it's got fuzz on it, but it lives near the rug in a handgun safe by the bed.

Glock 34 with lightened slide and solid barrel:



Stock Glock 19:

A compensated G23C where you can see the much smaller slide cut outs and small slots in the barrel itself than a G34/35:


Yes, it's got fuzz on it, but it lives near the rug in a handgun safe by the bed.