Recoil Spring Installation


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bdg146
April 25, 2008, 08:57 AM
Since I run +P loads through my Ruger P90, it was mentioned to me that it wouldn't be a bad idea to buy a stiffer recoil spring. With that in mind, I purchased a 14-lb. Wolff recoil spring. Its my first time doing so, and there were no instructions, so I have a couple questions before going ahead with installation.

One end is smaller than the other on my stock recoil spring. The smaller end goes on the guide rod and "grips" the guide rod at the base where there's a small indentation. However, the Wolff spring doesn't seem to be made like this. Both ends appear to be the same size and the spring moves freely when placed on the guide rod. Is this a problem?

My other question has to do with replacing the firing pin spring that they include with the recoil spring. I tried Googling this, but didn't find anything... how do I install it? I know where it's located, just don't know how to get in to take it out.

Thanks!

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RecoilRob
April 25, 2008, 10:48 PM
First, does the firing pin spring need to be replaced? Is the pin smearing the primer indent on unlocking with the +P ammo? If not, then there isn't anything to be gained with the heavier FP spring. Wolff adds them to all mainspring kits to help prevent inertial pins from hitting the primers with the increased forward slide velocity caused by the heavier spring.

If the pin isn't retracting quick enough and dragging in the primer mark, well....it is time to put the heavier spring in! You need to first remove the extractor by prying it outward until its' lug comes out of the hole in the slide, then pull forward to remove.

With the extractor gone, you can now turn the safety levers all the way around until they will come out each side. You need to push the FP in at some point and press the FP safety button too but I am fuzzy on the exact order from ancient memory. Once you get the extractor out...you won't have any problems from there if you fiddle with it! Good luck!

Oh, the Wolff spring isn't made the same as the stocker and should work either way round.

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