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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

    "Received quickly and love it"

    Paul Penny on 6/22/2012 11:18:04 AM

    Overall Product Rating:

    Excellent kit with all needed parts for my USPC .45. Took a little extra time to figure out all the positioning tricks first time through, but no problems and the improvement over the V1 trigger is amazing.

    "Works great"

    Donald Moore on 8/28/2013 9:16:00 AMVerified

    Overall Product Rating:

    Very easy to install and works great.


    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!

    "Great up grade"

    Herbert Chutter on 8/21/2012 5:55:31 AMVerified

    Overall Product Rating:

    This kit made my usp compact 40 a pleasure to shoot compared to the var.1 trigger I replaced.The parts staff were very helpful in sorting which parts to use.Recommend highly.

    "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.


    James Keesee on 11/19/2011 10:37:15 AMVerified

    Overall Product Rating:

    This trigger works as designed.I have only shot a few 100 rds so jury is still out. Looks like it will stay in at this point.

    "HK LEM conversion kit"

    Richard Parent on 4/3/2012 5:02:35 AMVerified

    Overall Product Rating:

    The kit was nice except there were no directions. It would have been nice if a picture of the parts in detail was included for proper orientation.

    "LEM trigger"

    eric on 7/9/2012 4:43:39 PMVerified

    Overall Product Rating:

    great improvement, liked it better than SA/DA trigger, not spongy, safety lever not in the way, can shoot tighter groups.

    "Excellent kit"

    Eric C on 9/12/2013 8:08:36 AMVerified

    Overall Product Rating:

    The kit was of excellent quality. It installed easily and works flawlessly. The reset is better and shorter than I imagined it would be and the trigger break is good. After firing 200 rounds and dry firing with snap caps, the trigger is getting better.

    "LEM Conversion Kit USP Series Pistol"

    Gary Shiroda on 1/28/2011 8:09:04 AM

    Overall Product Rating:

    Purchased & installed 1st kit for USP 45 Compact, worked so well it's a "must have" for my USP 45 Tactical! Order placed today!!!!