Great points and always appreciate your input!
What lightens the DA pull from the standard DA to the LEM is the fact that the hammer spring is fully compressed before you start your LEM trigger pull. When shooting LEM you only have the cocking piece spring, TRS, and FPB springs to overcome before taking the shot. In the DA pull on the standard variants you must fully compress the hammer spring to take the shot, just like when you dry fire the LEM trigger without first racking the slide.Thanks for the fantastic post, Big Bore.
I'd like to ask a few questions if you don't mind:
1. Since the stock TR and FPB springs are the ones that make the LEM trigger pull light, are you saying that it's the other parts of the LEM kit (e.g. hammer, etc.) that lower the factory 11lb DA pull on the V1/V2/V9/V10 to the light 5lb LEM pull? I was under the impression that the TR, FPB, and main/hammer springs that came with the kit were the ones that lightened the factory 11lb DA pull.
The benefits would be in the eye of the beholder. Even with the match trigger kit you still have SA/DA and the first shot is heavier than the follow up shots. With the LEM all shots are the same, first to last. The match trigger should not really be compared to the LEM since they are apples and oranges. The match trigger compared to the standard V1 trigger is marginally lighter but much smoother, crisp, no over travel, and feels about a pound lighter than it is. IMO the best trigger every made for a HK is the Match/LEM hybrid used on the Combat Competition which is as the name implies, a mix of the match trigger and the LEM trigger. You end up with a very light 4.5 pound LEM trigger pull with no over travel due to the match trigger OT stop screw. The Match TRS, FPBS, flat spring, and hammer spring combined with the LEM kit all mesh to make one fantastic trigger with the best of both worlds.2. What benefits do the match trigger kit offer as compared to the LEM kit (other than the latter being DAO)?
No, you cannot combine anything in the LEM kit that will lighten the Match trigger and still retain SA/DA function. It is the Match trigger parts that serve to lighten and smooth out the LEM trigger. If you use the two-piece hammer from the LEM kit, which is what lightens the DA pull, you will no longer have SA function.3. Is it really possible to combine both kits (like in the Combat Competition model) to a) lighten the DA pull (perhaps using the LEM kit) and b) to lighten the SA pull (using the Match Trigger kit)?
Thanks in advance.
Okay. I think I finally got it. Sounds to me like the LEM trigger system works like the SA principle of the DA/SA models except that there is a longer slack and the hammer always starts from the forward position.In the DA pull on the standard variants you must fully compress the hammer spring to take the shot, just like when you dry fire the LEM trigger without first racking the slide.
Actually, I was indeed pertaining to the Match/LEM hybrid trigger of the Combat Competition. I didn't know that it was actually a DAO system.No, you cannot combine anything in the LEM kit that will lighten the Match trigger and still retain SA/DA function. It is the Match trigger parts that serve to lighten and smooth out the LEM trigger. If you use the two-piece hammer from the LEM kit, which is what lightens the DA pull, you will no longer have SA function.
When you put in the LEM kit and retain the safety the decocker will no longer work, but it will depress. If you want it not to depress at all, get the V9/10 detent plate.Big Bore, is it possible to convert the new Hk45c to the LEM, retaining the safety as was done in your original post? Being used to keeping the thumb on the safety while firing, I cannot seem to avoid decocking the pistol during rapid fire. Plus, I'm not a huge fan of the decocker anyway.
Lastly, isn't the new P30s supposed to be the LEM with a safety?
If you want to be able to ride the safety and not have it depress, then you need the V9 detent plate. However, keeping the V1 detent plate in there will give you the safety function but it will no longer decock. That function is deactivated with the addition of the LEM kit unless the HK45 is a lot different than the USP and USPC, and I don't think it is in that regard.I was told it needs a new detent plate, that is on order from germany, to have LEM and keep the safety. For some reason V9 comes to mind but im not sure which plate it is exactly.
You do need the V9 variant plate but one for the HK45/C. Indeed the USP/C and HK45/C detent plates are different. I am not sure who will actually have them but if none of those people have them then you pretty much will have to wait until HK gets them in.I am pretty sure there was a post on HK-usa and the tech said indeed it was different than a USP and needed a different detent plate. Here is the link to what I am referring to http://www.hk-usa.com/phpBB3/viewtopic.php?f=2&t=6794 I havent actually looked up the part number yet so im not exactly sure what Variant the plate is. The thread I posted is kinds of vague but it let me to believe it was different from a USP. What do you think BigBore?
Did you take out the hammer strut when you took out the guts? I have always left the hammer strut in place and it goes right back into the proper position once you get it all back together and put in the hammer spring and lanyard loop. If you removed the hammer strut, make sure you do not have it in backwards, if that is even possible.I need help in positioning the hammer strut so that it works with the ratchet in the hammer. I think that that is the crux of my problem.