Following the success of their G4 Comp, Strike Industries is working on a comp for Gen3 Glocks. They posted this video of their prototype on their instagram account.
It looks a little different from the G4 Comp. The G4 comp is rather slim. It is the same width as the slide and frame of the Glock.
Now take a look at the G3 Comp, it has extra material that enshroud the front of the dust cover and the bottom corner of the slide. I am not sure why that is necessary but we shall see when more information come out about this new comp. I am concerned if the G3 Comp will interfere with rail mounted accessories like weapon lights.