They both look 9mm size to me. Is the Glock a Glock 19? I have a 19 and previously had a 30. I don’t have the belt clip on my 19. I know nothing of the new ones above model 30.
S&W compact, Glock 26/27
Actually now that I look a little closer, it seems that could be a G19, the grip seems to be cut down at the front strap, but not at the backstrap, with a short mag/pinkey ext. in place. If it is a 19, than the S&W gotta be a M&P compact, not a Shield.