I've seen a bunch of mentions of people running lighter recoil springs in their Glocks, around 13 lbs, if I recall correctly, so that they will run flatter, which doesn't seem like it suits my gun or needs, but I noticed in my internet browsing that there are heavier recoil springs available for them, and I can't find any information on their use. Is there any good reason for those to exist? It seems to me that it might reduce wear for some guns, such as Glock 22s, that run hotter ammo than the typical 9mm, but it also seems that they might also end up with significant reliability issues.