All my Glock pistols have extended controls. I'm just used to in having them on my guns.
Agreed, I use the Vickers mag release on my gen 4 Glocks and love them. Personally, I haven't seen the need for an extended slide catch.I put a Larry Vickers mag release on my G32 today. It really does protrude just enough...and I like the chamfered corners. I'm good with the other controls, but the Vickers release truly improved my gun...