Yes, but you can't use the add-on backstraps while the plug is installed because the backstraps hook into the hole that it fills.
This version installs just like the Gen3 versions, this is the Gen4 Glockmeister plug for Gen4 Full Size and Compact:
http://www.glockmeister.com/Glockme...-Size-Compact-Gen-4-GLOCKS/productinfo/BCIG4/
The other brand Gen4 grip plugs leave a screw sticking out of the backstrap. I'd personally hate that. The Glockmeister version I liked to above DOES NOT leave a screw sticking out of the backstrap.
This version installs just like the Gen3 versions, this is the Gen4 Glockmeister plug for Gen4 Full Size and Compact:
http://www.glockmeister.com/Glockme...-Size-Compact-Gen-4-GLOCKS/productinfo/BCIG4/
The other brand Gen4 grip plugs leave a screw sticking out of the backstrap. I'd personally hate that. The Glockmeister version I liked to above DOES NOT leave a screw sticking out of the backstrap.