HK USP Compact , HK45 Compact Straight Trigger
$95.00
The HK® USP Compact Straight Trigger is designed for rugged use and competition to deliver performance and quality that will outlast your pistol.
- Reduces gross over-travel, allowing for a shorter reset
- Straight face for improved finger placement
- Vertical, 90-degree wall for an optimal trigger break
Fully compatible with the Grayguns Short Reset System for the HK USP. Ensure you review the Fit Guide and order the correct trigger.
We have the USP Compact version in Black Oxide or Nickel.
Description
Designed by Keith Hosey, Grayguns’ director of gunsmithing, the HK USP Compact Straight Trigger is a first-of-its-kind in the market. The trigger reduces over-travel while featuring a 90-degree optimal trigger break.
This USP straight aftermarket trigger design allows for lower finger placement and may provide a feel of reduced pull weight. However, the trigger design does not reduce pull weight.
Made in the United States to high-quality standards, it guarantees the fit and finish Grayguns is known for. Precision machined from tool steel and heat-treated adequately for optimal wear resistance. Hand inspected and finished to ensure a quality trigger we can stand behind for life.
HK USP Compact Straight Trigger Fit Guide
Important: This is the HK USP Compact version of this trigger. We have a version for the HK USP Full Size, Elite and Expert right here.
Fully compatible with the Grayguns Short Reset System for the HK USP, and LEM and DA/SA trigger groups.
This trigger fits…
- USP Compact in 9mm
- USP Compact in .40 S&W
- UPS Compact in .357 SIG
- USP Compact in .45 Auto
- HK45 Compact
Finishes
Black Oxide – Our high-quality blued finish is our standard for this product.
Additional information
Weight | .0625 lbs |
---|---|
Dimensions | 6 × 4 × 1 in |
Version | USP Compact Black Oxide, USP Compact Nickel |
5 reviews for HK USP Compact , HK45 Compact Straight Trigger
5 star | 100% | |
4 star | 0% | |
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1 star | 0% |

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.
Fit and finish is excellent.
I love it.
Flat wide comfortable face with enough chamfer the corners don’t feel sharp. Breaks at a nearly perfect 90°… to me this sharpens up the USP to feel like a precision Worldclass weapon.
I added both the flat trigger and the reset kit to my HK45C. Single action is particularly good. Double action is more comfortable for me, though the trigger pull is a bit high. However, my pistol is still pretty tight. I expect the double action will improve with age. For now it is a superb platform for combat. The reset is improved about as advertised. I’m very pleased with these additions and recommend them to improve trigger comfort, single action as good as Sig, and a noticeable improvement in reset.
Install wasn’t hard, it’s a very nice difference. You can feel the shorter reset and it breaks cleanly. I chose the nickel and it is a good contrast to the all black on my USP compact 45. Only minor change I’d do – could’ve used some texturing/lines on the inside of the trigger, I did notice my finger would slightly slide down the trigger sometimes.