Originally Posted by
PBSteve
Personally, I'd ditch the RAT. Never had luck with mine, got the impression it was more "brute Force" engineering than carefully designed. I don't know what size valve the FLE takes but personally I'd run stock or a tornado (if you want to get really serious about it). I'm sure Simon also has a good option available.
Edit: to my recollection the RAT also requires a considerably heavier hammer than stock, not sure if the inception hammer fits the bill. It will also require a heavier hammer spring.