LEM Swap Problem/Help

2512 Views 20 Replies 3 Participants Last post by HollowPoint, Sep 19, 2016

HollowPoint

Discussion Starter · Sep 15, 2016

I have a USP Tactical date code AG that I did an LEM swap on years ago. Works great. I'm now doing an LEM swap on a USP 9 date code KD. The catch and control latch are a lot different on the 9 compared to the Tactical. Now that it is all assembled, the hammer does not pre-cock. It's essentially double action only. Did I do something wrong? Is the old catch/latch assembly not compatable with the LEM trigger? Can I get a new catch and latch to replace the old style and make it work?

Thanks for any and all help!

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TooSixy

· #6 · Sep 15, 2016

Post a pic of the right side of the frame where the hammer axle is. Did you install the hammer axle correctly?

All pre-KF USP's will need some modifications to the frame for LEM conversion, among other things.

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TooSixy

· #12 · Sep 16, 2016

Did you or someone else modify the frame to allow the fitment of the LEM hammer axle? If no modification has been done to the frame, I'd really like to see a pic of the frame as stated in an earlier post.

Unless you're keeping the DA/SA safety/control lever.

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TooSixy

· #14 · Sep 16, 2016

Some of the steps in this tutorial may have changed but it should help you figure out how to post pics. Or just email the pics to me and I'll post it for you. PM me for my email if you wish.

http://www.hkpro.com/forum/hk-rookie-corner/192739-how-post-pictures-ii.html

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