While goofing at the range the other day I rented a Glock 36. I then compared it to my 26. The slides are the same width at 25mm. The grip on my 26 is 30mm wide, just as the specs say. It would be easy for Glock to make a more narrow frame and still keep the same slide as they currently have. I would think making the grip a tad longer than the 26 in order to eliminate the need for all those stupid extensions and allow for 2 extra rounds or so would be the ticket, or even keeping the gun the same height as the 26. The 36's thin grip is just way comfortable.