HK USP, HK45 Short Reset System

(26 customer reviews)

$90.00

Our HK USP and HK45 Short Reset System replicates our custom in-house short reset conversion with a drop-in kit for your pistol. These kits are cut from bar stock steel and provide an exacting fit for easy installation.

It shortens the reset travel distance by about one-third, reduces trigger over-travel, and reduces pull weight while maintaining all factory safety functions.

This kit is specific to the HK USP and HK45 models with or without a thumb safety, including DA/SA and LEM variations. Review our Fit Guide and trigger bar notes below.

In stock

Description

The HK USP and HK45 Short Reset System should be an easy installation for those familiar with the pistol’s trigger mechanism.

The control latch is precisely wire cut EDM from ground bar stock to exacting tolerances. Properly heat-treated and coated in a durable nickel PTFE finish for a lifetime of durability and smooth function.

Engineered to provide several benefits:

  • Shortens trigger reset travel distance by approximately 30 percent
  • Converts the action to drive the sear directly off the control latch – instead of transferring energy through the catch – for a direct drive connection between the control latch and sear
  • Reduced trigger over travel values
  • Maintains all factory safety functions
  • It simplifies installation and reassembly as the control latch can be installed separately from the catch. (Similar to the P30 and P2000.)
  • Works with both DA/SA and LEM variants
  • Included Grayguns Firing Pin Block Spring reduces stacking in DA pull and lightens trigger pull

Parts Included in Kit

Install all parts, including the extended sear roll pin, as the parts are designed to be installed together.

  • Custom-designed Grayguns Control Latch
  • Custom replacement Firing Pin Block Spring
  • Custom replacement Extended Sear Roll Pin

HK USP & HK45 Short Reset System Fit Guide

The kit works with the following DA/SA and LEM variants – with or without a thumb safety:

  • USP
  • USP Elite
  • USP Expert
  • USP Compact
  • USP Tactical
  • HK45
  • HK45 Compact

Our kits will not fit the following variants:

  • Double Action Only pistols
  • MK23
  • Early USP models with joined one-piece catch, control latch, or a short catch that stops the hammer rather than a spur. These older versions are rare and usually easily identified because they lack the rubber coating on the hammer thumb stud.
  • We have not tested our system with the P8A1 version of the USP. A limited number were imported to the USA, and customers have had mixed results after installing the kit. One reported great results, another not so much.) We do not suggest our kit for the P8A1 at this time.

Important Trigger Bar Notice

Our gunsmiths have determined variance in some HK45/USP trigger bars. Some guns have an angle cut on the front side of the sear on the trigger bar. (See photos below.)

We have found that installing our parts in a firearm with the extra cut will induce some issues within the gun. In double-action mode with the safety on, the trigger bar allows the hammer to drop onto the catch as if it were being de-cocked.

We do not recommend our parts be used with a trigger bar with this extra cut. However, the gun will not go off in the case of the extra cut. Please consult your local gunsmith if you do not know how to check your trigger bar.

USP Trigger Bar Identification

USP Trigger Bar Identification

 

 

Additional information

Weight .0625 lbs
Package Dimensions 6 × 4 × 1 in

Share your thoughts!

4.77 out of 5 stars

26 reviews

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What others are saying

  1. Ralph Boal

    Does what it says!

    Ralph Boal (verified owner)

    First off, I agree with Grayguns that a competent gunsmith oughta do the work. I found it stressful, though successful…..I used this on a .45 USP Elite, trying to build a competitive target pistol. The Elite trigger was just not good enough; it was too hard to squeeze, gritty, and the trigger swings at an angle that forces my finger into the trigger guard, where it drags in a “stick-slip” fashion. This kit with a wolf springs 12# hammer spring reduced the pull a bit in single action, reduced it a lot in double action, and made a big difference in the DA reset point. The grittieness was improved, although I used Amsoil gear oil which accounts for some of that improvement. I reshaped the inside of the trigger guard with a sharp knife to keep my finger from dragging. The sum of all these labors is a pretty good trigger. The gunsmiths at Grayguns do some things I cannot, like Nickel Poly Tetra Floro Ethylene coating.

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  2. Christopher Brown

    .

    Christopher Brown (verified owner)

    ..

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    • Grayguns Customer Service Team

      Grayguns Customer Service Team

      Chris,
      Your experience after installing the kit is not typical. If you have not called our customer service team, can you please reach out to them?
      We’ll update our reply after you speak with them. I’m confident we can get your questions answered and figure out what is happening.

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  3. John Turner

    Flawless So Far

    John Turner (verified owner)

    I purchased the HK USPc Short Reset System in addition to the Straight Trigger Kit in anodized black and though not surprised, it functions perfectly. Furthermore, the gunsmith that installed both kits said that this is an excellent company with excellent products and that I would be really happy with the new changes the products provide, and I can wholeheartedly say it has completely changed the way this gun functions, increasing efficiency, effectiveness, functionality. Reduces Reset as advertised.
    Money well spent! Thank you!
    Gun: HK USP COMPACT 40
    Manufactured: 2022

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  4. marcusdockweiler

    Phenomenal Upgrade!

    marcusdockweiler (verified owner)

    This is by far one of the best upgrades to install into your USP to greatly improve the shootability. Its night and day difference between the factory sear and this short reset upgrade, it makes the gun feel like a conpetition piece. I recommend this, and the flat face trigger as upgrades to everyone that owns this platform.

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  5. cnick66qn0

    Excellent customer service

    cnick66qn0 (verified owner)

    I purchased a like-new USP Compact 9mm recently (CB date code) and ordered the reset kit. After install, the thumb safety wouldn’t engage upward. I spoke with Chris in customer service and he immediately knew my problem. He emailed me a shipping label and after a 3-day turnaround, I received the modified latch. I reinstalled the new latch and voila! My USPc works perfectly. Thanks Chris!

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  6. kfordtx62

    Essential upgrade!

    kfordtx62 (verified owner)

    I have GrayGuns short reset kits in all of my LEM P30s and now my LEM HK45C. They make the LEM much more shootable, and are highly recommended. Now, if GG can just be persuaded to do a flat trigger for the HK45C…

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  7. Christopher Wright

    What reset?

    Christopher Wright (verified owner)

    This makes my hk45 reset short and crisp! Easy for me to install. This along with a nickel sear spring is a must on all my HK hammer fired pistols!

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  8. One person found this helpful
    John Papai

    Bought 2 for my USP 40 and USP Compact 40

    John Papai (verified owner)

    Both work great for my sidearms! If youre not use to working on your own, I would recommend taking them in to a smith to do the work.

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  9. krkellogg

    A must have item for a HK45

    krkellogg (verified owner)

    Does what it says. Really cuts down the reset as advertised. About 35 to 40% on my gun. Put it in my HK45 DA/SA (German special edition for Europe only) and can not be happier. Best money I have spent on a gun part in a long time.

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  10. Daniel Lenaghan

    HK USP short reset kit

    Daniel Lenaghan (verified owner)

    I have installed these kits on my USP Compact 9mm and.45acp. And I just purchased one for my full-size USP 9mm. I have purchased several and would recommend to a friend.

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  11. ajoegevara

    Night and day!

    ajoegevara (verified owner)

    Added this to a 20 years old USP the same time I converted it to all match parts, which was all painstakingly polished and a 10# hammer spring. What an awesome difference! I will be doing everything again to my USPc, but will be adding the straight trigger as well. I wish y’all would go ahead and release that trigger for the full size.

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  12. Kurt Parker

    Great piece of kit over all

    Kurt Parker (verified owner)

    Worked really well on my USP 45 with match trigger, but not with my P8A1.

    Does a great job of doing what they say it will do.

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    • Grayguns Customer Service Team

      Grayguns Customer Service Team

      [UPDATE] – We’ve been in contact with Kurt. He was having issues with one of his pistols, a P8A1 version of the USP. The P8A1 is a modified version of the USP originally deployed by the German Bundeswehr (armed forces). A few P8A1s were imported to the USA, and we have not tested our internals with this version. The P8A1 has different internal geometry than the USP, including a reversed safety. We’ll update our product description and requested Kurt take a few minutes to update his review.

      //

      Kurt, We were looking for an email from you about your concerns on Monday and Tuesday and did not find it until late on Tuesday. (It came from a different email address than your order.) Your results are not at all typical, and our team will work with you to address your concerns if you are willing. Our customer support team in Oregon has reached out to you. We do not state the system reduces pre-travel. The system certainly does reduce the reset. Our team will work with you, and we hope you’ll take the time to update your review. We are certainly not in business to fleece anyone.

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  13. Dudley

    Short Reset in HK P8A1

    Dudley (verified owner)

    Installed the GrayGuns Short Reset system in my HK P8A1 (German military version of USP) and worked great. Easy to install, and works as noted. Have had excellent results with other Grayguns parts for my SIG’s, so expected same for my HK. Thanks!

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  14. Andrew Chimelak

    USP 9mm Tactical

    Andrew Chimelak (verified owner)

    I love my USPs. They are my most purchased pistols, I’ve owned several of them over the years, accurate, reliable, and sexy as hell. My last 9mm USP was also a tactical, I sold it to fund a Staccato and kicked myself in the ass when I did. However, I had a reason for selling it, as I always have for USPs. The trigger in the pistols, specifically the reset, is not something that I like, and is the ONLY down side I have for these guns. I can not stand putting together a string of rapid fire and short stroking the reset into a dead trigger, its annoying.

    I found the staccato DPO had its own flaws so I let it go and went back to my favorite handgun of all time with every intention of doing some type of trigger work.

    ENTER GRAY GUNS SHORT RESET KIT. I installed this kit myself, I’m not at all an armorer but have had several of these pistols so I do have enough knowledge to do so. I found that I had to adjust the over travel screw in the trigger in order to get the pistol to fire after install. This was noticed as soon as I put the gun back together and was doing a function test for it. After making the adjustment everything worked as it should. I went straight to the range after working on my USP and Glock and was absolutely pleased with this part. I can shoot this pistol fast without being interrupted by the reset, this short reset system does as it should and has filled a hole in an otherwise perfect gun.

    If you carry, or shoot enough, I highly recommend this part for your USP. It will give you a better experience over all. Is it worth it? it absolutely was for me.

    Thank you BRUCE for your work.

    Please make a metal trigger designed around the OEM curve and I will buy one immediately.

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  15. englishshound

    englishshound (verified owner)

    Great addition to my USP 45, the only thing that I can see improving on it would be a metal trigger to get the most out of it.

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  16. Kevin Lee

    Awesome

    Kevin Lee (verified owner)

    Shortens reset by about 30 percent. Took about an hour to install. Works as advertised!

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  17. bridgetroll68

    Excellent upgrade for a HK45c

    bridgetroll68 (verified owner)

    I put the HK45 short reset kit into my HK45C LEM and absolutely love it . The reset on the trigger was shortened by over 30% closer to 40% it feels like . Very easy upgrade to do . Quality of parts is outstanding. Do not hesitate to try this out . Thanks for a great parts upgrade , made a really awesome gun better.

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  18. Craig Longenbaker

    Drops right in

    Craig Longenbaker (verified owner)

    The short reset kit drops in easy enough on a USP compact 45 and best of all the trigger reset is cut almost in half.

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  19. One person found this helpful
    William Brown

    Perfect!

    William Brown (verified owner)

    I furst bought a short reset for my P30 and was impressed so bought one for my USP Expert 45. The trigger was already pratcially perfect but with a long reset. The GG SRT cut reset to about 30 percent as advertused BUT! Shave a few ounves off the trigger pull and best of all, removed the last tiny .25mm or so of creep from the trigger. It is now Perfect and just amazing. You take up the slack to the walland just increase pressyre and the trigger breaks with zero creep and with the overtravel stop, zero overtravel. You simply camt feel the trigger move. It just breaks and stops.

    As noted on the one star review, i did need to screw the overtravel stop in about 1/8 of a turn for single action to work, so im glad i read that first.

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  20. 0 out of 2 people found this helpful
    Brian Sheaffer

    sa doesn't work

    Brian Sheaffer (verified owner)

    Intailled the product now it wont fire in single action

    [Please see the reply by the Grayguns Customer Service team.]

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    • 7 out of 7 people found this helpful
      Grayguns Customer Service Team

      Grayguns Customer Service Team

      Brian,
      We understand your issue should now be resolved. With your aftermarket adjustable match trigger installed, we suggested you adjust the trigger’s over-travel a bit and that solved the issue. We hope we’ve gotten you to a place where you can update and revise your review.

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  21. One person found this helpful
    grammcgregor

    Exceptional Upgrade!

    grammcgregor (verified owner)

    I LOVE HK quality but prefer the Sig Short Reset Trigger actions – I found the solution!

    I installed this in my USP9C at the same time as the HK Factory Match Trigger – it was such an unbelievable improvement – I immediately ordered one for my USP9 Expert – factory match trigger was smooth with crisp break but reset wasn’t as short and consistent as I prefer. Installed the SRT and it took the trigger action to a whole new realm!! Can’t believe how short and crisp! Such an immense improvement and frankly in combination with the Match Trigger(s) – it’s absolutely incredible. Mind boggling that such a “seemingly minor part” makes such a HUGE improvement. Gray Guns MAGIC!

    Love Gray Guns Quality and Customer Service!!

    Thanks Bruce and Keith!!!!

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  22. Jonathan Rodie

    Mandatory upgrade

    Jonathan Rodie (verified owner)

    First of all thank you to Gray Guns for checking out my trigger bar for compatibility. Shipping was fast, parts installed within a few minutes, and couldn’t be happier. Double action feels a bit smoother and the reset is not only shorter but more defined; light years ahead of stock. FYI I have a BD date code and everything works perfect. This did not work with the match TRS, trigger would not reset after double action pull. Stock TRS works just fine, hope this helps.

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  23. userdefault

    userdefault (verified owner)

    This is a mandatory mod. I never could get 100% used to the standard LEM trigger. Mine is an HK45 with TLG light LEM setup. I’m far too used to short resets, coming from the Glock world. As much as I love HK’s and the LEM concept, I’ve just never been able to run LEM’s smoothly. This kit totally fixes that. I also bought one of these for my P30, and like it a lot as well. Interestingly, I feel like this kit on the HK45 has a few percent better trigger feel in comparison to my P30. The reset feels ever so slightly shorter than my similarly modded P30.

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  24. nopointsurrender

    excellent!

    nopointsurrender (verified owner)

    fairly easy installation- and while I always felt my USP’s have pretty good reset, it improves it to where reset is extremely short.
    I have one in my .45 tactical and I’ll be ordering another for my 9mm compact.

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  25. One person found this helpful
    David

    David (verified owner)

    No Instructions or part ID… pin is what baffled me. HK forums ID’d it as the sear pin. Once I installed, the reset is about 1/3 shorter which is great. The lack of something as simple as Id-ing the parts to replace is crazy… not what I expect from Grayguns. So it would be a 5 star for me if it wasn’t for that.

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  26. 4 out of 4 people found this helpful
    mgd675

    mgd675 (verified owner)

    a bit pricey, but so are a lot of precision tools, received Friday, installed, it is the BOMB, very SIG like, truly short reset and short pull, my gun has a LEM trigger, a very good investment, thanks Bruce and Company

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Disclaimer

Many parts sold by Grayguns - including but not limited to triggers, trigger kits, internal components and spring kits - are intended for installation by a qualified armorer or gunsmith who is familiar with the firearm.

Although kits fit with no issues in a great majority of pistols, Grayguns cannot guarantee perfect functionality in every instance.

Due to varying tolerances present in all mass-produced firearms, professional fitting by a qualified armorer who is familiar with the pistol's action may be required.

Grayguns offers installation services for all parts kits we offer. If you have any issues or questions about the installation process, STOP IMMEDIATELY and contact the Grayguns Customer Service Team.