I had a LaserMax Laser on a Mod. 21 and sold it this past week. The guy that bought it said I didn't send all the parts and he was right, I didn't. LaseMax kept my OEM slide stop switch and spring back in 95. Well as I was in the basement checking out the pistol to see if he was right I disassembled my Mod. 30 to see if the spring was the same as the 21. NOPE it wasn't.
I sent him the slide stop (from LM) and the spring as well.
OK, I said all that to say this.
FOR THE LIFE OF ME, I CAN'T PUT THE SPRING BACK INTO THE 30. and make it cause upward tension on the slide stop.