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HK P30 DIY enhancements and results — smooth and lighten trigger Login/Join 
Security Sage
Picture of striker1
posted
I’d like to hear from folks who’ve done any of the following:

- replaced 12-lb mainspring with 10-lb

- replaced flat sear spring with nickel-plated

- replaced firing pin block spring

- replaced control latch with Grayguns nickel or similar

- ETA: replaced trigger return spring with lighter version

This message has been edited. Last edited by: striker1,



RB

Cancer fighter (Non-Hodgkins Lymphoma) since 2009, now fighting Diffuse Large B-Cell Lymphoma.

“Did you hear about the statistician who recently drowned in an average of 5 feet of water?”


 
Posts: 7090 | Location: Michiana | Registered: March 01, 2005Reply With QuoteReport This Post
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I just got done with changing out the following on my P30 V3:

Firing pin block spring with the light one.
Sear spring with the nickel one.
The trigger return spring with the light one.

Changing these springs improved the double action pull to where most of the staging feel went away. I used a trigger pull gauge before and after and it lowered the pull weight about a pound and a half. The single action pull is less spongy and more predictable at let off. The trigger release weight didn't really change it's about 5 lbs. If you're paying attention to the pull weights I've mentioned they're not the whole story. The feel of both the single and double action pulls are smoother. For what it cost me in parts (minimal) it was a worthwhile project one that allowed me to improve the trigger as well as better understand the mechanics of the firearm.
 
Posts: 58 | Location: Kansas | Registered: September 05, 2009Reply With QuoteReport This Post
Security Sage
Picture of striker1
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^
Thanks, that's very useful information!

I've yet to find out if the control latch change also "lightens" the DA pull.



RB

Cancer fighter (Non-Hodgkins Lymphoma) since 2009, now fighting Diffuse Large B-Cell Lymphoma.

“Did you hear about the statistician who recently drowned in an average of 5 feet of water?”


 
Posts: 7090 | Location: Michiana | Registered: March 01, 2005Reply With QuoteReport This Post
Security Sage
Picture of striker1
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Placed an order today with HKPARTS.

I already have the 12-lb blue spring, so I ordered:


QTY 2 - HKP-16489 10-lb Hammer Spring
QTY 2 - HKP-01955 Firing Pin Block Spring, light
QTY 2 - HKP-01811 Nickel plate Flat Sear Spring
QTY 4 - HKP-01921 HK German Roll Pin
QTY 2 - HKP-01801 Light Trigger Return Spring

I’ll convert one and test before I do the other one.

I wasn’t sure I wanted to try the 10-lb hammer spring, but these pistols aren’t in my carry rotation for now.



RB

Cancer fighter (Non-Hodgkins Lymphoma) since 2009, now fighting Diffuse Large B-Cell Lymphoma.

“Did you hear about the statistician who recently drowned in an average of 5 feet of water?”


 
Posts: 7090 | Location: Michiana | Registered: March 01, 2005Reply With QuoteReport This Post
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Picture of dc54
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There’s a flattened needle nose plier tool that is helpful with the TRS. It’s not necessary, but helpful. I haven’t worked on my HKs in years and don’t plan to in the future. Let me know if you want me to send you the tool. My email is in my profile.


Sigs, HKs, 1911s, Glocks and SW revolvers
 
Posts: 946 | Location: GA | Registered: February 04, 2013Reply With QuoteReport This Post
Security Sage
Picture of striker1
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dc54, thanks for the offer! I have one.



RB

Cancer fighter (Non-Hodgkins Lymphoma) since 2009, now fighting Diffuse Large B-Cell Lymphoma.

“Did you hear about the statistician who recently drowned in an average of 5 feet of water?”


 
Posts: 7090 | Location: Michiana | Registered: March 01, 2005Reply With QuoteReport This Post
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