[shawn85206]

I've got a PDP Compact and have been looking into these. Just wondering if anyone here has any experience with them and did it make a huge difference?

I had looked at the Ultra Mass Guide Rod for about a year and finally bit the bullet and ordered one with the 17# spring they recommended. The day before it arrived, they released whatever the new one was. I was a little pissed at first, "Hey a heads up would have been nice", until I remembered I had chosen the Ultra Mass because I wanted the additional weight. A funny thing happened when I installed it, for the first time I noticed the fore/aft balance, and it felt a lot better to me! I also liked how the slide goes back into battery positively. With their 15# there always appeared to be about a millimeter of gap, I could tap the but and it would close. Because it had never caused an issue, I became accustomed to it and stopped noticing. With the new 17#, it just feels tighter in a good way.

So now the question is, what are you asking out of a new spring? The Ultra Mass with the 17# did exactly what I wanted and I no longer care that a newer toy was offered. If they came up with an improved spring for the Ultra Mass, I would watch it and see what others thought, then maybe order it. Meanwhile, I have a steel guide rod and the 13#$ and 15# going unused, the 15# was an improvement over the factory plastic IMHO.

 

[wbnash]

shawn85206 makes a good point in that ZRTS comes out with newer versions of the same models rapidly. Frustrating if one wants the latest and greatest, but they have all worked for me.

I have been using the 15# spring and have not had an issue going back into battery in both my PDP Compact 4" and my 5" full size.

To me, it ( heavier rod and lower rate # spring) seems to help.

 

[Letuch]

Hey y'all!

All this talk about lowering RSA spring weight misses one very important point; when lowering rsa spring weight, you MUST also lower the firing pin spring weight!!! If you don't lower the firing pin weight, you risk out of battery situations. Be careful!

I run the ZRTS LS 14.5 assembly and run a 5.0 Glock FP spring. Perfection!!

This makes no sense to me. Maybe I don't get something here. Firing pin spring is being cocked by slide moving back and having light RS should not produce tougher time for FP spring compression. Return to battery yes, as there's less force vs friction. But it should not have anything to do with firing pin spring

It's one of the striker-fired pistols beauties. Firing pin spring is not affected by hammer-fired main springs and trigger spring is completely disconnected from striker/hammer connections in terms of how hard primer is getting struck

 

[efcb]

DPM is the vendor to use for products like those. You'll deal with adults instead of children and your order will arrive promptly.

 

[abrekos]

DPM is the vendor to use for products like those. You'll deal with adults instead of children and your order will arrive promptly.

I personally prefer Sprinco USA Recoil Management Systems that is very similar, if not identical to DPM but made in USA. It's came with red recoil spring that reassemble the stock weight and I ordered yellow spring also that has 15 lbs weight. Fits and finish impeccable and install is easy with provided tool and washer. I will post pictures later.

 

[Jimmo952]

DPM is the vendor to use for products like those. You'll deal with adults instead of children and your order will arrive promptly.

What happened with ZR?

Just currious.

 

[efcb]

What happened with ZR?

Just currious.

After buying several items from them, I commented on one of their presentations and from that point on, they refused to sell me anything else. It's certainly their right but it's also mine, to make their juvenile antics known. Dealing with DPM was refreshing after that experience.

 

[Jimmo952]

After buying several items from them, I commented on one of their presentations and from that point on, they refused to sell me anything else. It's certainly their right but it's also mine, to make their juvenile antics known. Dealing with DPM was refreshing after that experience.

Got it.

I've used a few things from them and they've done a lot for the Walther third-party market, but stuff can happen.

I was just currious.

 

[efcb]

Got it.

I've used a few things from them and they've done a lot for the Walther third-party market, but stuff can happen.

I was just currious.

They offer quality items.

 

[Herr Walther]

What is the deficiency in the Walther supplied guide rod and spring?

 

[Jimmo952]

What is the deficiency in the Walther supplied guide rod and spring?

Not so much a deficiency from point of view but it depends on what a person is trying to achieve.

ZR's offerings allow you to "tune" the gun for a specific load or desired recoil impulse.

Their guiderods are metal which probably makes them more durable. The stock polymer PDP guide rod does not seem to be problematic but many are more comfortable with steel.

Besides guiderods, they offer other parts for the PDPs. Base pads, backstraps, optics plates, trigger spring-kits, ...

Interestingly, ZR offers a "long-stroke" recoil system. Walther, as reported by a forum member, is using something similar on their German Special Forces pistols.

 

[abrekos]

I personally prefer Sprinco USA Recoil Management Systems that is very similar, if not identical to DPM but made in USA. It's came with red recoil spring that reassemble the stock weight and I ordered yellow spring also that has 15 lbs weight. Fits and finish impeccable and install is easy with provided tool and washer. I will post pictures later.

Here is the Sprinco kit.

 

[abrekos]

Here is the Sprinco kit.

And reduced power yellow spring.

 

[jay90g60_2583]

recoil springs compared