LWD recommends using a guiderod that's compatible with ISMI springs for their Longslides. I used a Wolff setup with my original G20L with no issues, but the same setup wouldn't function with my new G20LS. I now run LWD's guiderod & 22# ISMI spring.
You won't need an extended guiderod, the standard length works great.
GEN 3 20LS/20SF/21SF/30SF/23/34/26
GEN 4 17/19/21/34/35
Last edited by Meathead9; 12-26-2011 at 14:21..