Glock 22 gen 3

[Sensai]

My son has a gen 3 Glock 22 40 cal. and wants to buy an aftermarket barrel in .357 sig. Does he need a heavier recoil spring/ guide rod assembly, or is the factory weight of 18 lbs ok. Thank for your help.

[24601]

the factory weight is fine as the 31 takes the same weight spring as the 22....but i thought it was 17lbs for the full size glocks and 18lbs for the compact....

someone feel free to correct me if im wrong...