on my glock, i have the stainless guide rod and non captured recoil springs. love it. i say go for it. extended slide release and extended slide lock are great upgrades too. if you ever want to shoot some reloads, get a storm lake barrel as well. i have all those things as well. i always heard that modifying the gun will make it less reliable, but i havent had one FTF or FTE yet and ive shot a good 1000 rounds through it with the modifications.