Wondering about using a Gen3 slide on a Gen4 frame?
Here’s a handy chart showing off what a Gen4 frame and Gen3 slides cause.
You’ll see the gap above the dustcover due to the different design of the Gen4.
You’ll need to use a Gen3 guide rod assembly for proper fitment.
This combination will function fine, but you’ll have a cosmetic gap around the dustcover.
The longer the slide (Tactical Length/ Lonslides) the less noticeable the gap is.