USPc .40s&w LEM trigger group


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Erik
March 24, 2003, 07:03 PM
Specs from H&K's sight:

Caliber: .40 s&w
Capacity: 12+1
Sights: 3-dot night sights
Width: 1.14"
Height: 5.00"
Sight radius: 5.35"
Weight: 1.53 lbs.
Barrel: 3.53"

(For those who aren't familiar with the pistol is general)

The H&K USP compact .40 s&w is a compact (full grip) polymer framed, 3.5 inch barreled pistol which features a magazine capacity of 12.

(For those who care more about the LEM feature)

Note: A mix of H&K's info and mine.

The Law Enforcement Modified (LEM) system uses a rearward movement of the slide to pre-cock an internal seperate cocking piece within the hammer. The hammer returns to forward to the slide after loading or firing, yet the internal cocking piece stays cocked. Once the trigger is pulled, the hammer is driven forward by the cocking piece to fire the pistol. The amount of force is pre-set at 7.5 to 8.0 pounds. There is a 4.5 to 5.0 pound option which is unaquthorized by any agency that I am currently aware of. (Though there's talk that if the high-speed LEO types like it, they may have that option granted....)

The LEM system offers the following advantages over the much debated DA Only systems currently favored by so many departments: (Not that this system would be debated as well....)

A reduction is trigger pull weight from the typical 8-13 pounds to 7.5-8 pounds. (Granted, not much of a reduction if you happened to already have an 8 pound pull.)

The virtual elimination of resistance during take-up. The hammer is alread cocked internally, so basically the first half and inch of travel is a smooth "glide." The take-up is approximately a half an inch, iirc, with the 7.5-8 pound weight found in the last quarter of an inch of travel. It took a bit getting used to, I will admit, but....

The trigger resets to a quarter of an inch after the first shot. :) That's "all good" as a classmate of mine likes to say. Anyway, a decided advantage over the DAOs I've had experience with.

I'd love to get ahold of a 4.5-5 pound model. Looks like I'll have to get more high speed. ;)

---

Anyway, that's my review, for what it is worth. I spared you the boring details of how I'm shooting with it, as mileage will vary, as with near everything. If they ever release the LEM system trigger group for sale to the general public, maybe this will come in useful someday to someone.

Take care,
E

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10-Ring
March 24, 2003, 07:15 PM
I shot a USPc 40 LEM late last year. I liked it alot, if it ever becomes available in the USPc 45, I'm getting one.
I liked the fact that it has 2nd strike capabilities & for true H&K fans, the trigger pull if you ever needed a 2nd strike, reminded me of the VP70's :rolleyes:

M1911
March 24, 2003, 09:05 PM
I tried it and frankly wasn't impressed. I'd rather carry my USP cocked and locked.

2nd strike? Whatever for? If the round doesn't go off the first time, you are far better off doing a tap-rack-bang than wasting time pulling the trigger again. And the lack of second strike is one more indication that you need to do a tap-rack-bang. Personally, I think second strike is a negative, not a positive.

Erik
March 25, 2003, 06:58 PM
I'd rather carry in C1 too. It isn't an option, however. At least not on duty. The LEM is a fine compromise, arguably the best one yet, driven this time by shooter input as much as by some policy maker far removed from the range. (Still holding my breath for the balance to shift.)

I too feel that instead of (potentially) wasting time utilizing the second strike capability that a tap-rack drill is in order.

Handy
March 25, 2003, 07:07 PM
I really think this is one of the best partially staged DA's yet designed (Glock, P99 QA, etc.). It's interesting watching one fired and seeing the hammer slowly staged back. The Daewoo/FN system works about the same way. Among it's attributes, the increased force of primer ignition over most striker weapons.

Personally, I think 8 lbs. is about the basement for an unsafetied trigger. I put a NY1 trigger in my Glock for that reason.

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