[TooSixy-closed]

A few members have asked me to post the individual parts and their associated part numbers for the LEM and Match LEM Hybrid triggers, so here they are.

Note
• Parts can be purchased from HK Customer Service (706-568-1906), Brownells, MidwestGunWorks, EuroOptic, TopGunSupply, Numrich, and HKParts
• It is more cost effective to purchase the whole LEM kit (for USP/USPc/HK45/HK45C) than to buy individual LEM parts
• LEM with different trigger pull weights can be achieved by using different combinations of TRS, HS, and FPBS. See this LEM Springs Reference Chart for more information.
• Some of the part numbers may have been changed by HK by adding a "50" prefix to the old part #. For example, part 219439 is now 50219439.

Abbreviations
FP = Firing Pin
FPS = Firing Pin Spring
FPBS = Firing Pin Block Spring
HS = Hammer Spring
TBDS = Trigger Bar Detent Spring
TRS = Trigger Rebound Spring
DA = Double Action
SA = Single Action
LEM = Law Enforcement Modification (aka Combat Defence Action or CDA outside of the U.S.)


For USP/USPc/HK45/HK45T/HK45C/HK45CT
Required LEM Parts
1. Sear (50219439 or 219439)
2. Cocking Piece (50219443 or 219443)
3. Bobbed Hammer (50219452 or 219452)
4. Hammer Axle (50214258 or 214258)
5. Cocking Piece Spring (50219444 or 219444)
11. Catch (50219442 or 219442) <-- only for early 2005 (AF) or earlier date code


Light LEM Variant:
• Keep your V1 (DA/SA) TRS
• Keep your V1 (DA/SA) HS
• Keep your V1 (DA/SA) FPBS

Heavy LEM Variant:
7. Heavy TRS (50219441 or 219441)
8. Heavy HS - HK45C/HK45CT only - shorter spring (234460)
9. Heavy HS - USP/USPc/HK45/HK45T - longer spring (50214695 or 214695)
10. Heavy FPBS - (209962) <-- For USP/USPc only

For P2000/P2000SK
Required LEM Parts
1. Release Catch - aka Sear (209320)
2. Cocking Piece (209265)
3. Bobbed Hammer (209321) <-- not applicable if you are converting to V4.1 LEM
4. Cocking Piece Spring (209275)
9. Sear Actuator Latch aka Control Lever (209274)


V0 LEM Variant:
This is LEM variant with spurred hammer and decocker. Available only outside of the U.S.

• LEM Spurred Hammer (209262, pictured below)
• You will not need parts 1 and 3 (LEM Sear/LEM Hammer)
• Keep your V3 Sear (with decocker)
• Keep your V3 HS and TRS (part #6)
• For P2000SK - Keep your V3 HS (207122)
5. Light FPBS (50209296 or 209296)

Light LEM (V1 LEM) Variant:
5. Light FPBS (209296)
• Keep your V3 HS and TRS (Part #6)

Heavy LEM (V2 LEM) Variant:
7. Heavy Elbow Spring for Trigger - aka Heavy TRS (50219441 or 219441)
8. Heavy HS (50214695 or 214695) <-- for P2000 only
• Keep your V3 FPBS (206962)

V4.1CH LEM Variant:
6. Light TRS (209266)
10. V4.1 LEM Hammer (207934)
11. V4.1 TBDS (207932)
12. V4.1 Catch (207933)
• You will not need the standard LEM Hammer (part #3)
• Keep your V3 FPBS (209962)

For P30/P30S/P30L/P30LS/P30SK/P30SKS
Required LEM parts
1. Release Catch - aka Sear (209320)
2. Cocking Piece (209265)
3. Bobbed Hammer (209321) <-- not applicable if you are converting to V4.1 LEM
4. Cocking Piece Spring (209275)
8. Heavy LEM HS (50214695 or 214695) <-- not applicable on a P30SK/P30SKS
10. Sear Actuator Latch aka Control Lever (209274) <-- not applicable on an S model (e.g.: P30S, P30LS, or P30SKS)


V0 LEM Variant:
This is LEM variant with spurred hammer and decocker. Available only outside of the U.S.

• LEM Spurred Hammer (209262, pictured below)
• You will not need parts 1 and 3 (LEM Sear/LEM Hammer)
• Keep your V3 TRS (234389)
• Keep your V3 Sear (with decocker)
• Keep your V3 FPBS (209962)
• For P30SK/P30SKS - Keep your V3 HS (207122)

Light LEM (V1 LEM) Variant:
6. Keep your V3 TRS (234389)
• Keep your V3 FPBS (209962)
• For P30SK/P30SKS - Keep your V3 HS (207122)

Heavy LEM (V2 LEM) Variant:
7. Heavy Elbow Spring for Trigger - aka Heavy TRS (234405)
• Keep your V3 FPBS (209962)
• For P30SK/P30SKS - Keep your V3 HS (207122)

V4.1CH LEM Variant:
9. Medium TRS (234773) or keep your V3 TRS. The stock V3 TRS gives you a lighter trigger pull.
11. V4.1 LEM Hammer (207934)
12. V4.1 TBDS (207932)
13. V4.1 Catch (207933)
• You will not need the standard LEM Hammer (part #3)
• Keep your V3 FPBS (209962)
• For P30SK/P30SKS - Keep your V3 HS (207122)

If you want to lighten the final trigger pull weight by an additional 1/2 to 1 lb, you will need the Light FPBS (part #5 - 50209296 or 209296).

Note
All LEM variants use the same V3 (DA/SA) Hammer Axle (for P30/P30L/P30SK) OR V3 Ambi Safety Lever and V3 Control Lever (for P30S/P30LS/P30SKS).

Match + LEM Hybrid
Required Parts
1. Match Trigger (215684)
2. Overtravel Stop Screw (215680)
3. Hex Wrench (958179)
4. Light TRS (209266) <-- Factory Match LEM Hybrid trigger uses the Light TRS for a more positive reset
5. Match Hammer Spring (215694)
6. Match Nickel-Plated Flat Sear Spring (215691)
7. Catch (50219442 or 219442) <-- only for early 2005 (AF) or earlier date code
8. LEM Sear (50219439 or 219439)
9. LEM Bobbed Hammer (50219452 or 219452)
10. LEM Cocking Piece (50219443 or 219443)
11. LEM Cocking Piece Spring (50219444 or 219444)
12. LEM Hammer Axle (50214258 or 214258)

Notes
• If you have an HK45, you already have part #7, and may not need parts #5 and #6. Double check to make sure your gun comes with parts #5 and #6 from factory; some do, some do not. Many recent models (BC date code and later) no longer come with parts #5 and #6 from factory. If your hammer spring is painted Blue, it is not the Match hammer spring.

• If you have an HK45 Compact, you already have part #7, and may not need part #6. Double check to make sure your HK45c comes with part #6 from factory; some do, some don't. Many recent models (BC date code and later) no longer come with part #6 from factory. Part #5 must be cut to size to fit.

• If you have an HK45, HK45 Compact, or USP Compact, you will not be able to use the Match Trigger assembly (part #1). The stock trigger can be drilled and tapped for the overtravel stop screw, or the Match trigger must be modified to fit the smaller trigger guard. The USP Compact models have very little overtravel room in the trigger guard area so a stop screw may not be needed at all.

Match + LEM Hybrid (from factory LEM)
If you have a factory LEM and want to convert it to a Match LEM Hybrid trigger, all you need are some of the Match Trigger parts.

See Notes above regarding the Match trigger if you have an HK45, HK45 Compact, or USP Compact.

Required Parts
1. Match Trigger (215684)
2. Overtravel Stop Screw (215680)
3. Hex Wrench (958179)
4. Light TRS (209266)
5. Match Hammer Spring (215694)
6. Match Nickel-Plated Flat Sear Spring (215691)

Match + LEM Hybrid (from factory Match)
If your pistol comes with a Match Trigger from factory (Expert, Elite, Match, or Tactical but not USP9SD or Compact Tacticals) and you want to convert it to a Match LEM Hybrid trigger, all you need are some of the LEM parts.

Required Parts
1. LEM Sear (50219439 or 219439)
2. LEM Cocking Piece (50219443 or 219443)
3. LEM Hammer (50219452 or 219452)
4. LEM Hammer Axle (50214258 or 214258)
5. LEM Cocking Piece Spring (50219444 or 219444)
6. Light TRS (209266)
7. Catch (50219442 or 219442) <-- only for early 2005 (AF) or earlier date code

Note
• If your USP Tactical (40/45) date code is AF to BB, double check to make sure if yours already has the Match HS (part #8) and Match Nickel-Plated Flat Sear Spring (part #9). Note that the USP Tactical 9mm is not listed here because it did not exist until late in 2014 (BE) and only became available to the general public in 2015

• If your USP Tactical (40/45) date code is BB or later, or if you have a USP Tactical 9mm (but not USP9SD) you will need these Match parts:
8. Match HS (215694)
9. Nickel-Plated Flat Sear Spring (215691)

 

[f4bones]

AWESOME! Where can one order these parts?

 

[awiner]

AWESOME! Where can one order these parts?

Directly from HK USA

 

[SEAINC]

Good info, thank you.

 

[mvwilkin]

TooSixy,
About the TRS, it might be good to note that there are four (4) different ones. I have a USPc V1 that came with this one, a Light and heavy LEM that came with the kit, and there is a Match TRS too. For Light LEM, you can either keep the one that came in the gun or use the black painted (light TRS) that comes in the kit. There a SLIGHT difference with the two, but its mostly in the reset (I tested both and ended up keeping the one that came with the kit, as the reset isn't as forced). I'm anticipating trying the match TRS, but I don't know if it would cause more flinching or anticipation for me.

 

[TooSixy-closed]

The difference between the stock TRS and Light TRS is so minuscure that either one could be used for Light LEM. The Light TRS is actually identified as part #6 in the picture. So is Heavy TRS (part #7). The Match TRS is never used in a LEM configuration.

 

[mvwilkin]

The Match TRS is never used in a LEM configuration.

Is there a functional or safety reason for this? Im thinking of dropping this in to see whats its like, but I know some people have trouble with it in an LEM setup with not resetting when letting off the trigger too slow. I don't think I want to spend the money to find this out, but my curiosity is killing me, lol. I'm definitely going to get the match sear spring.

 

[TooSixy-closed]

I updated this thread with the individual part numbers for the Match + LEM Hybrid Trigger.
It is best to contact HK Customer Service and order the parts directly from them. You will save a bundle! Their Customer Service number is (706) 568-1906, press 2, then press 1 for Customer Service.

 

[Carrots]

Good info here. Pinned up top.

 

[Tombstone17]

Thank you for the info!

 

[AGTtactical]

TooSixy, THANKS for this great info. Are these part numbers below applicable to the USP in .40 S&W? I want to convert a couple of stock USP Tactical .40's to Match + LEM Hybrid. I believe the parts below will yield a 4.5 pound trigger pull, correct?

Match + LEM Hybrid
1. Match Trigger (215684)
2. Overtravel Stop Screw (215680)
3. Hex Wrench (958179)
4. Light TRS (209266) <-- Factory Match LEM Hybrid trigger uses the Light TRS for a more positive reset
5. Match Hammer Spring (215694)
6. Nickel Plated Flat Sear Spring (215691)
7. Catch (219442) <-- only for pre-2005 date code
8. LEM Sear (219439)
9. LEM Bobbed Hammer (219452)
10. LEM Cocking Piece (219443)
11. LEM Cocking Piece Spring (219444)
12. LEM Hammer Axle (214258)

 

[TooSixy-closed]

@AGTtactical: Same part numbers across the USP series. You will only need parts #4, and 8 to 12, since yours already has the Match Trigger parts. You might need part #7 if your gun's date code is AE=2004 or earlier. If it is AF=2005, you will not need it.

Those parts will give you a 4.5 to 5.0-lb trigger pull.

 

[AGTtactical]

TooSixy, thanks for the awesome and timely response! I'm trying to get the exact part numbers because I recently sent another pistol, a USP, in to have a light LEM installed. When I got it back the trigger pull weight averaged nearly 7 pounds (trigger pull scale is correct)...clearly more than it should have been. The folks at HK have been great, but to avoid any potential mistakes, before I send off my two USP Tacticals I will specify the exact parts in the future.

Anyhow, thanks again. Hope I can return the favor one day. Semper Fi, Rod

 

[TooSixy-closed]

They will know exactly what parts to install on the gun if you tell them you want a Match LEM Hybrid conversion. No need to tell the specifics.
How did you measure the trigger weight when you got your gun back from HK? Did you rack the slide before measuring?

 

[AGTtactical]

They will know exactly what parts to install on the gun if you tell them you want a Match LEM Hybrid conversion. No need to tell the specifics.
How did you measure the trigger weight when you got your gun back from HK? Did you rack the slide before measuring?

Yeah, I sure did rack it so the hammer was cocked, then measured it 10 times, racking the slide each time between measurements. Average was 6 pounds 10 ounces. Only lost a little over a pound off the trigger weight from the original LEM gun before I sent it, using the same trigger pull gauge.

 

[SIGthusiast]

@AGTtactical: Same part numbers across the USP series. You will only need parts #4, and 8 to 12, since yours already has the Match Trigger parts. You might need part #7 if your gun's date code is AE=2004 or earlier. If it is AF=2005, you will not need it.

Those parts will give you a 4.5 to 5.0-lb trigger pull.

TooSixy,

I just wanted to verify before I order parts. This reply is the same if I want to covert a USP 45 Tactical to LEM/Match Hybrid?

 

[TooSixy-closed]

TooSixy,

I just wanted to verify before I order parts. This reply is the same if I want to covert a USP 45 Tactical to LEM/Match Hybrid?

Yes, same parts. Also check your date code or look at the catch and make sure you have the longer catch.

 

[CrashClint]

Does anyone know how much HK charges to install the Match + LEM Hybrid kit? My USP is an AE date code and is currently DA/SA with Safety Decocker. Does converting to Match + LEM Hybrid remove the safety lever or will it still work?

 

[TooSixy-closed]

Does anyone know how much HK charges to install the Match + LEM Hybrid kit? My USP is an AE date code and is currently DA/SA with Safety Decocker. Does converting to Match + LEM Hybrid remove the safety lever or will it still work?

You can keep or lose the safety lever when converting to Match LEM Hybrid trigger.

 

[isntzen]

Can I convert a p30sk LEM to V3?