Was thinking of doing this to my S5RF, going to add a hidden second guide rod to the back block for sure though.
There are a couple ways to do custom ICS without modifying critical parts too much, my current favorite being a puller sleeve retained to unmodified back block with a screw, the sleeve fits inside the mainspring and requires a bored out IVG, and a purpose made cocking rod. Can be done the other way around too (sleeve on hammer). I prefer the first method because it makes disassembly and maintenance easier.
Last edited by ApoC_101; 07-13-2013 at 04:51 PM.