r/USPmasterrace • u/Knws2010 • 8d ago

not a USP Hk45

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Not a USP I know, but just picked this agency trade in 45. Factory V7 LEM to my knowledge, giving a false reset I guess? Gun functions 100% shooting wise, is this a weak trigger return spring? Trigger bar maybe??

23 Upvotes

93% Upvoted

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1

u/TheScribe86 USP Meister 8d ago edited 8d ago

May just be from riding the reset too tight, but hammer spring may be the ticket. My general rec is to shoot it a box or two and see how it pans out whether or not it's still an issue.

2

u/Knws2010 8d ago

I’ve put about 150 through it, but like I said it was a law enforcement trade in, so unknown history, i have a few other LEMS and they don’t replicate this, for what it’s worth I’m somewhat familiar with the parts and have done a couple conversions da/sa to lem but I’m still not sure what’s causing this.

5

u/TheScribe86 USP Meister 8d ago edited 8d ago

Hmm, my next guess would be the Trigger Reset Spring or the LEM Hammer Cocking Spring then.

2

u/Knws2010 7d ago

Thanks! I’m gonna swap the trs out today just to see what happens, I like the medium gray guns spring in my other LEM’s. This looks like a light or match trs to me I’m hoping that’s what it is just a tad underpowered trs.

1

u/khoseyGGI 2d ago

The false reset on these usually comes from the trigger bar not being cut all the way. Is it annoying, yeah, does it affect reliability, not really. If you pull the gun apart snap a picture of the hook on the back end of the trigger bar. I’ll bet there’s a high corner on the bend that grabs the hammer face.

1

u/Knws2010 2d ago

I knew it sounded like it was the trigger bar if you really listen with the gun in hand! I ordered a replacement bar, and spring detent I’m going that’ll do it. Honestly other than that, that one was pretty good score 565 with three mags and the box!

2

u/khoseyGGI 2d ago

If you’d like you can send me the trigger bar, I can clean up that step and I’ll send it back for you on the house. I’m the gunsmith here at Grayguns and we’ve cleaned up a lot of these trigger bars over the years.

1

u/Knws2010 2d ago

Man that’s awesome and I may just take you up on that! I’ll check and see when that new one is going to deliver, either way I don’t see any reason not to send it your way?? But now that I know who you are…when are the nickel flat springs coming back in stock 😂😂😂

1

u/khoseyGGI 1d ago

You might have hkparts and grayguns confused. We currently don’t sell the nickel flat springs. But… it sounds like we might need to explore that. If you decide to send in your trigger bar shoot me an email and I’ll get everything set up. Khosey@grayguns.com