[Elijah]

I couldn't find an answer to this but wondered why the front of my recoil spring guide(USP-C 45) looks like you could put a standard screwdriver blade in it. Why?

 

[Elijah]

No one knows?

 

[deeHKman]

Not sure but might be you can change the spring without buying a entire recoil assembly. Just a guess..I know some who change the weight in the spring. The entire RSA i think should last like 20,000 rds.

Expensive to replace but a spring i would think need's changed much more often. I shoot alot of +P ammo so i think i would ask HK or watch to see how far my brass was going before a spring change.

 

[deeHKman]

No one knows?

Elijah, not many come in this part of the forum i just noticed you had a post here. Any word on your HK polymer missing from Travis(HK) today? That one guy on GT sure got hateful. Sad day's.

 

[Elijah]

Yep-the guy was a real jerk. You meet all kinds on the Internet. Yes, I did hear back today from HK but before I could call Travis I got this email from Sam...

"I understand your concern, but I reiterate, Your pistol frame is completely
normal.
There are often variations and excess in the polymer during production that
have no affect on performance or function.
The ejector is a part of a larger steel insert built into the frame that
includes the rear slide rails and does not need polymer surrounding it to
function or to retain its position.
This is NOT a concern nor represent a need for repair to the frame.
Please rest assured this will not result in any negative affects,
performance or durability.

Respectfully"

So, I guess I just need to move on with this and just shoot it. I'd be lying if I said it didn't still bother me a little but, as he said in his email I'll get better.:wink:

 

[Uriah]

Are you referring to the front of the guide rod assembly, as shown here?

 

[Elijah]

Yep, that's it. I don't see it's function.

 

[Uriah]

It's just HK's later design for keeping the recoil spring captive on the guide rod.

The original design used some different pieces to keep the spring captive. You should see such in your manual in the exploded parts diagram.

http://www.hk-usa.com/-images/shared/USP Manual REV 3-07.pdf

 

[Elijah]

So, it looks like you can't change out the recoil spring if you wanted to...that entails an expensive RSA sometime down the road.

 

[deeHKman]

So, it looks like you can't change out the recoil spring if you wanted to...that entails an expensive RSA sometime down the road.

I think you can change the recoil spring. I believe Wolf make's some for the USP's. I have read that some put a heavier spring to shoot .45Super in their .45's. I'll see if a search can find anything...

 

[Uriah]

So, it looks like you can't change out the recoil spring if you wanted to...that entails an expensive RSA sometime down the road.

It's not something I've ever done myself, but I believe I recall hearing that the end of that newer design can be squeezed a bit for removing/replacing the spring.

And as far as replacing it, a recoil assembly isn't all that expensive when you consider you'd have to shoot $5k-$9k+ worth (15k-25k+ rounds @ .35 cents each) of 230gr FMJ factory ammo at current prices to get it to the point that it needs replacing.

 

[Elijah]

I did a little digging around myself and found this-an unheard of thing with the 1911 that all say require a change at about 3,000 rounds. I can't imagine what the difference would be with an HK to be able to go to 10K+ rounds without a change. However, to be able to go 10K or so rounds is a great blessing.

http://www.hkpro.com/forum/hk-handgun-talk/126253-usp-compact-recoil-spring.html