Yes. The springer models an older version of the Glock 17 (Version One, I believe? Someone can correct me if I'm wrong), where the GBB models the most recent version of the Glock 17 (Version Three) - these versions differ by these slight cosmetic differences (and other differences)
Edit: I was referring to the RS Glocks.
Last edited by GZA; June 8th, 2009 at 22:26..