HK USP, HK45 Short Reset System

(9 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 model 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
  • 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 models that have the 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.

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 being 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 with 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!

4.44 out of 5 stars

9 reviews

Let us know what you think...

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What others are saying

  1. 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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  2. 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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  3. One person found this helpful
    Brian Sheaffer

    sa doesn't work

    Brian Sheaffer (verified owner)

    Intailled the product now it wont fire in single action

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    • 3 out of 3 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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  4. 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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  5. 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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  6. 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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  7. 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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  8. 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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  9. 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

    (4) (0)

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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.