end result of this is a smoother trigger. but as parts vary your results may vary. this is fairly simple though the pics makes it look easier than it is. the trigger pin is not fun to take out and put everything back together neither is the sear,sear lever and housing. caution springs can fly and pins can fall and roll where you cannot find them. this shouldnt have much effect on guns that suffer from a very crunchy trigger or sproingy trigger ie lots of spring no crisp. it will only be nice once the gun has 500-1000-2000 rounds more you use the gun better the springs will let up. if you have a very crunchy or gritty trigger either send the gun into S&W or find a smith that can stone the sear and striker clean. horizontal ridges on sear face and striker face will make the trigger gritty or crunchy. caution do following in well ventilated area be carefull of open flame. teflon dry lube is flamable carefull the teflon cools and drys before heating it can catch fire keep at eye on it blow it out immediately polish the teflon covered part let cool and apply more dry lube. reassemble if trigger is too sluggish remove excess teflon. wolff gunsprings aka gunsprings.com is offering a lighter striker safety spring which may also make the trigger nicer. this mod is best done on a sigma that has been broken in while the part removing extra springs from the sear and sear lever can lower the trigger weight but may decrease reliability with all. such mods should be reserved for target and competition. I found removing springs decreased crispness of the break which is not that great to begin with.