I recently decided that it was time to do a little PM on my G19. So I bought an ISMI spring and SS guide rod.
To tell if the weapon recoiled differently, I first shot a couple mags with the old spring. I then installed the new guide rod and spring and ran a couple more mags. The gun felt smoother during recoil and allowed me to be faster on follow up shots. I will be running several hundred more rounds through it to make sure there are no issues with combo.
I’m interested also in the SS guide rod and ISMI sping. I’ve seen the ISMI flat wire recoil spring comes in 18# and 22# for the G19. Which one are you using? With what ammo?
I bought the ISMI CS spring and a tungsten non-captive guide rod for my G17 about a year and a half ago. No problems to report as of yet.
I’ve heard that the tungsten guide rods tend to crack with high round counts, but it will be a while before my round count makes this a concern for me.
Tungtsen is brittle. Dawson Precision makes a tungsen rod for 1911s that has a stainless cap (end toward bbl link) that’s a whole lot less likely to break (just the rod portion is tungsten). Its held together with a screw. I don’t know if the offer the same for Glocks. My STI has a tungsten rod all one piece (not Dawson) so it’s just a matter of time before it cracks. I carry a stainless rod in my range bag for when it gives up.