HK USP Blues.

[Aufdrahtsein]

So, I have about 800rds through my HK USP fullsized (9mm) and I'm seeing the same issue: Jamming. Usually the round will fire, the brass will attempt to extract from the chamber and will get trapped between the the unspent round and the slide. This is my first pistol, and I'm sure sure what I'm missing as far as adequate break in time. Before I shoot it, there's always factory made round going through it, with the adequate amount of lube. Since I've owned it, this has happened roughly 20-times, on three different magazines. Questions/Comments/Suggestions?

[Black Majik]

How tightly are you holding the gun? The recoil spring on the USP is pretty light so it can be prone to limpwristing. Try out a tighter grip, this will help the slide reciprocate its full travel, allowing the sprent brass to extract, eject and return to battery.

[Mr310]

Limp wristing would be my first guess as well.

[Creampuff]

Have someone else try it. If they get the same result, that might rule out limp wristing (unless he is also limp wristing)

Is there a lot gunk under the extractor?

[tbc]

Yeah. I would let someone else try it to remove operator error from your equation. how do you grip it?


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[hornswaggled]

What kind of ammo? I know with the P2000 they say 124gr NATO rounds are what it was designed for, and anything weaker can cause issues.

[Raider888]

Same situation happened to me with a full size H&K USP40, it was going to be my go to gun, not sure if the magazines were worn or the gun. Switched to Glock and no more problems.

[The Fugitive]

Try hot ammo like s&b.

[Aufdrahtsein]

Using 115gr Federal Ball, and I'm a pretty small guy with small wrists; I wouldn't put limpwristing out of the question; I'd hate to see this piece go ( as it's my first one ) in replacement of a pistol that's better suited for me.

[Aufdrahtsein]

Oh, and I didn't note any build up of gunk on/in/around the extractor; I keep it fairly clean.

[Neptune]

I've got more than 30,000 rounds through my USP40, and haven't had any problems. Limp wristing will cause cycling issues with most any gun, especially if it's your first and you're unfamiliar with maintaining a good combat grip.



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[nrgcruizer]

I have had mine for years. I never experienced a hiccup with it. Fed it reloads & factory loads. Although mine has an after-market wolfe recoil spring.

[Q619]

I've got 2 p2000's a P30, a HK45 and a HK45c.....they all run 100% over thousands of rounds excluding one ftf with ****ty frangible eco friendly ammo in my p2000 .40. If it really is the gun, I'm sure HK will make it right. They really do put out a stellar product.

[Quigg]

I have a several USP's. I have countless rounds through them of all types without an issue. I keep trying to talk myself into another brand, S&W, Glock, etc... and then I think WHY!? I LOVE my USP's and will likely add another soon.

[Aufdrahtsein]

If limpwristing is an issue ( not saying that adequate practice should negate these issues ), would replacing it with an after market recoil spring be an easy fix, or should I stay with HK's proprietary recoil spring system? I guess I'm trying to convince myself to keep this instead of exploring other makes and models. My dad has an HK USPc in .40, and I can shoot that thing all day without incident, but there's well over 3k rds through it. Should I invest into a hotter load to see if that makes any difference? The next time I go out shooting I'll have my friends run a few hundred rounds through the gun to hopefully rule out operator error.