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HK LEM Kit Complete For USP & USP Compact Pistols

SKU: HKP-00316

HK Pistol LEM Conversion Kit.

New just released from HK Germany the "universal" LEM conversion kit for USP, USPC & HK45, HK45C pistols. The New universal LEM kit also fits the recently released HK45C & HK45 Pistols.

This kit will enable you to convert your V1-V10 HK Pistol to the LEM Conversion. Each LEM kit includes all of the parts necessary for the light LEM 4.5-5lb trigger pull. As well as the heavy LEM 7.5-8 lb. trigger pull.

Each kit comes complete in new factory packaging & is factory fresh production direct from HK Germany.

Compatible with:

  • HK USP 9mm
  • HK USP .40
  • HK USP .45
  • HK USP compact 9mm
  • HK USP compact .40 & .357 Sig
  • HK USP compact .45
  • HK USP, USPC & HK45C, HK45 Tactical pistols
  • HK45C
  • HK45

Each LEM kit comes complete with the following LEM parts:

  • Hammer
  • Cocking piece
  • Hammer rebound spring
  • Light trigger return spring
  • Heavy trigger return spring
  • Hammer spring (long) for USP, USPC & HK45
  • Hammer spring (short) for the HK45C
  • Sear
  • Hammer Axle (solid)

Please note: That any pre-2005 production USP Variants will also need the new style catch part number 219442.

USP LEM & HK45 trigger pull weights quick guide:

  • Use the trigger return spring that may be in any newer production HK pistol or HK part # 209266 (black colored, thinner trigger return spring) for light LEM trigger pull, approximately 4-5 lbs.

  • Use the square spring shaped trigger return spring in the kit for the heavier LEM trigger pull, approximately 7-8 lbs.

    Developed especially for a U.S. government agency, the Law Enforcement Modification (or LEM for short), is a unique trigger mechanism created specifically to improve the trigger performance and reduce the weight of the Double-Action Only (DAO) trigger pull in the P2000SK, P2000, USP, USP Compact, HK 45, and HK 45 Compact pistols. With this mechanism, HK pistols can be fired like a standard DAO semi-automatic pistol where every round is fired by simply pulling the trigger fully rearward with the hammer starting at the forward rest position. The design of the propriety HK LEM system allows the weight of the DAO trigger pull to be reduced to a smooth and constant 7.5 - 8.5 pounds because the two-part hammer is pre-cocked every time the slide moves rearward. Or a smooth 4.5- 5.5 pounds if the operator opts for the lighter trigger pull configuration.

    Please note: The LEM kit will not work in the P2000, P2000SK, P30, P30L, VP9 & Mark 23

  • Condition: New
    Origin: German
    Sub-Type: Conversion Kit
    MPN: 260204
    Price: $149.95
    In Stock
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    HK LEM Kit Complete For USP & USP Compact Pistols
    HK LEM Kit Complete For USP & USP Compact Pistols
    HK LEM Kit Complete For USP & USP Compact Pistols
    HK LEM Kit Complete For USP & USP Compact Pistols
    HK LEM Kit Complete For USP & USP Compact Pistols
    HK LEM Kit Complete For USP & USP Compact Pistols
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    Product Reviews

    Write your own review

    "LEM kit"

    Monte Holmes on 8/3/2012 3:18:10 PMVerified

    Overall Product Rating:

    Bought my first HK used USP 45. Loved the de-cocker but hated the long, hard double action trigger pull. A friend of my bout a P30 with a LEM trigger and put a LEM trigger in His H&K 45C. After His I finally added a LEM to the old USP 45. Love, love, love it!

    "Lem Parts kit HK 45C"

    Jim B on 2/22/2012 6:24:28 AMVerified

    Overall Product Rating:

    Parts kit worked great. Everything you need to make the switch. It took about a half hour while making dinner to install. Only wish it had some instructions included but these can be found online.

    "LEM trigger install"

    Peter Tanner on 5/11/2012 8:54:25 AMVerified

    Overall Product Rating:

    Easy to install takes about 30 minutes, but you have to watch the youtube video, this kit does not have installation instructions. High quality as with everything I have purchased from HK parts..

    "Best upgrade"

    craig freter on 12/1/2011 9:09:10 PMVerified

    Overall Product Rating:

    I installed on my USP compact 357 sig. The LEM makes the tigger like a Glock, only better. Very smooth take up, then light clean break. Able to ride the reset like a Glock.


    Cesar Melendez on 3/29/2012 5:40:28 PMVerified

    Overall Product Rating:

    Great kit with all parts included to make any changes to your V1 to LEM conversion.

    "Lem trigger upgrade"

    Anthony on 4/23/2012 7:56:33 PM

    Overall Product Rating:

    Wow the s/a trigger pull is smooth and d/a is a great improvement in accuracy.

    "Like to Love"

    Mark Leso on 12/8/2011 7:44:12 AMVerified

    Overall Product Rating:

    Changed from a V1 to LEM (light). Loved the trigger immediately and highly recommend it. Went from "like" to "love" for shooting my HKUSP9C. The (light) kit installed easily with just 2 punches and a pick.

    "Love the new trigger"

    Tim D on 7/5/2012 7:14:23 PMVerified

    Overall Product Rating:

    A great buy, I love the new trigger. Just wished there was a diagram or instructions with it. But found the info online. Once you put the kit in once it all makes sense.

    "LEM is most advanced HK Combat Trigger"

    Frederick Medina on 6/30/2011 9:15:03 PMVerified

    Overall Product Rating:

    LEM trigger makes DA/SA and traditional DAO triggers obsolete. If you have always wanted a pistol with the speed and simplicity of a Glock, combined with the superior craftsmanship and accuracy of an HK, get a light LEM trigger kit! As a bonus, LEM allows you to remove the decocking lever allowing higher stright thumb hold, and creating a thinner weapon profile for CCW.


    Paul P on 6/5/2012 12:08:39 PMVerified

    Overall Product Rating:

    Best place for all HK related needs... Fast service and delivery. You've got a customer for life!