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Anyone install CGW springs lately? Lite FP plunger spring looks too small

weaverftw

⚜️ Member
CAguns Supporter
2026
Messages
927
So I just installed the CGW Pro package with race hammer, SRS2 kit, and each reduction kit in my sp-01 and it feels great! Set the pretravel screw to make sure DA resets, set the overtravel screw so the hammer releases in SA without dragging on the sear, and set the adjustable sear to ensure the safety functions with the new hammer. All went well (even the hammer pins) and the gun feels great, I’ve had the SRS before in another 75 but this race hammer and reach reduction REALLY make a big difference even with the 13# hammer spring (I will try the lighter HS once I test this one at the range).

I ran into one possible issue though, and that is the lite firing pin block plunger spring that came with the kit seems really small in diameter compared to stock. Small enough that it doesn’t fit snugly into the plunger hole and seems like it could possibly move around and get jammed or otherwise bind up. It functions ok right now with dry function tests, but I’m worried it’s maybe the wrong spring meant for another model with a smaller plunger hole… I even took the 10 year old CGW lite plunger spring out of my 75BD and that one is the same diameter as stock… sits snugly in the hole.


Has anyone gotten one of these kits recently and noticed this? Is it possible they just redesigned it to have a smaller diameter for some reason, or do you think this is the wrong part?

First pic is of the new CGW spring. Second is of the old CGW spring from my 75BD (it’s the same diameter but a little shorter than the stock spring which I would expect as it’s lighter). Both are in the sp-01 plunger for size reference.

IMG_3646.webp

IMG_3647.webp
 
I have and I think that's right, you can also just cut down the OEM spring to make it lighter if you are worried but I don't think there's really anything for the spring to bind on once it's installed.
 
I have and I think that's right, you can also just cut down the OEM spring to make it lighter if you are worried but I don't think there's really anything for the spring to bind on once it's installed.
Ok this is alleviating my anxiety lol, it just seemed odd that the old one I got from CGW was the same diameter as oem but this one wasn’t. I’ve seen other guns with “loose” plunger springs from the factory, so hoping it’s fine. I am planning on shooting this at a match this Saturday so just want to cover my bases; I’ll shoot it at the range tomorrow and report back
 
I've put some insanely light plunger springs in Glocks before and never had any issue with it binding. It also still didn't help make a Glock trigger any better though lol. Just go shoot it a bunch it should be fine. I don't believe it would actually cause an issue with function even if it did hang up, it just wouldnt be as safe
 
I've put some insanely light plunger springs in Glocks before and never had any issue with it binding. It also still didn't help make a Glock trigger any better though lol. Just go shoot it a bunch it should be fine. I don't believe it would actually cause an issue with function even if it did hang up, it just wouldnt be as safe
The lightness doesn’t concern me, just the poor fit in the hole. If it binds and prevents the plunger from being depressed, the firing pin won’t be allowed to move forward and the gun won’t fire
 
The lightness doesn’t concern me, just the poor fit in the hole. If it binds and prevents the plunger from being depressed, the firing pin won’t be allowed to move forward and the gun won’t fire
only one way to find out! probably can also just send that photo to CGW and ask
 
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