Originally Posted by AZtwins
Sorry to resurrect an old thread but I just picked up another USP and am going to try the Match LEM trigger recommended by Mackay_Sagebrush. Have you guys found it to be a reasonable DIY job or better left to a gunsmith?

I’m pretty decent at projects like that - any particular tools that help do it correctly?

Thanks!

Mine is DA/SA (P30L) but I have all the parts available for the conversion. I've basically done it once already but didn't have the correct trigger return spring and had to reassemble it back to stock. It's a pain in the butt but it's doable. My best advice is once the slide comes off take a bunch of pictures of it. It'll help when reassembling.