O-ring


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Benzene
December 25, 2010, 12:22 PM
I wonder what the experience is regarding the claim that the O-ring on the barrel increases accuracy in the HK45. What does this O-ring actually accomplish, except making for an addition to what's "in the box"? :)

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PabloJ
December 25, 2010, 12:30 PM
A hobos solution you will not find on S&W Performance Center pistols like 952, 4563 CQB,.....If you ask them they will probably tell you it maintains accuracy while still being reliable system.

9mmepiphany
December 25, 2010, 04:16 PM
The O-ring enhances the accuracy of the HK45 as it did USP models before it. Remember that the O-ring avoids metal to metal contact between the barrel and slide while allowing a tight lock-up. When the O-ring wears, it can be restored with a $5 replacement.

What the O-ring does, in a more efficient way, is what S&W used to do with the Briley Spherical Barrel Bushing on their famous M-52

Benzene
December 25, 2010, 11:11 PM
Thank you, 9mmepiphany, for the useful explanaiton. What "replacement" would cost $5? Another O-ring?

9mmepiphany
December 25, 2010, 11:41 PM
Yep, another O-ring

http://www.hkparts.net/shop/pc/Barrel-O-Ring-HK-45-Caliber-Pistols-200p296.htm

rcmodel
December 26, 2010, 12:53 PM
I bet you can get the same O-Ring at an auto parts store for .50 cents.

rc

PO2Hammer
December 26, 2010, 01:45 PM
It's only an improvement if you are capable of shooting under 2" at 25 yards. The standard USP .45 (no O ring) proved to be just as accurate as the USP Tactical and the HK45. All shot very, very well for me, easily doing 2" or less at 25 yards with quality ammo when I did my part.
Who knows, the standard USP may have been even more accurate, but I'm unable to shoot any better.
I traded my USP .45 for the HK45 and later came to regret it, nothing wrong with the HK45, it's super accurate and reliable, I just prefer the USP with it's battle tank looks and very soft recoil.
All the HKs in .45 auto are super accurate. I see CDNN has USP .45 Elites for $899 and USP .45s for under $700, a heck of a deal.
IIRC, HK supplies 5 O rings with the HK45, a lifetime supply.

Benzene
December 26, 2010, 04:12 PM
Yes, the box contains4 O-rings. And, yes, the gun IS very accurate and reliable.

But I'm unable to explain why an item costing $0.05 could be sold for $5!

9mmepiphany
December 26, 2010, 04:26 PM
But I'm unable to explain why an item costing $0.05 could be sold for $5!

Like any other item in a free market, because people will pay that much for it. If people wouldn't, they would lower the price

vaherder
December 26, 2010, 04:39 PM
Like Porsche, BMW and MB parts HK parts are priced to sell for what the market will bend over for.

I have several BMWs in my garage and Red Line MTL is a great lubricant.

Buddy of mine needed a new battery for his E90 3 series. He took it to the dealer and is now $543.65 poorer. Battery was about $150 and the rest labor to install and program the battery into his car's electrical system. If you don't program the battery in it will cause significant damage to the cars computers and electrical system. And the best news is soon all car makers will be adapting and installing this same technology.


BTW I take an HK45 over any other 45acp ever made.
Va herder

The Lone Haranguer
December 26, 2010, 07:52 PM
It is a cost cutting meaure - cheaper than a properly fitted barrel/slide - yet the gun costs more. :rolleyes:

918v
December 26, 2010, 08:06 PM
I bet you can get the same O-Ring at an auto parts store for .50 cents.



There's more to HK o-rings than just the "O".

varoadking
December 26, 2010, 09:43 PM
It is a cost cutting meaure - cheaper than a properly fitted barrel/slide - yet the gun costs more.

...and you know this because?

Benzene
December 26, 2010, 11:30 PM
vaherder, you've made quite a broad and deep statement there: "... over any other 45acp ever made." I do like my HK45 very much - even bought an M6X light to affix to it. I love my Ed Browns and even Dan Wessons no less. Care to clarify your statement? Thanks.

PO2Hammer
December 27, 2010, 12:17 AM
I think he just wanted to tell us about his BMWs.

HorseSoldier
December 27, 2010, 12:39 AM
I have to agree it's a cheap way to shave labor costs that would be involved in getting the same level of lockup from carefully fitting barrel to slide.

jeepmor
December 27, 2010, 08:02 PM
But I'm unable to explain why an item costing $0.05 could be sold for $5!

Because it's German. As a guy in the Solar mfg business that is chock full of German equipment, I can attest to the fact that Germans overprice everything...EVERYTHING.

There's more to HK o-rings than just the "O".

If it's typical German fashion, they skip the stock parts bin stuff and make their own components. From a manufacturing point of view, this is just dumb for an o-ring, but might be absolutely necessary for the application like this. O-rings have spec's too, and buying them from HK means you just haven't found their supplier yet. Because dollars to donuts, HK doesn't make said o-ring, but they did set the spec.

Not to bash on HK, but in my experience, most German manufacturers like to ignore their customers as long as possible. Trust me, I am the equipment and process owner of 10 pieces of German solar manufacturing equipment and my experience is that the further east you go in Germany, the better the customer service becomes. Actually, a small company out of Dresden provides me the best support hands down. That's only miles from the Eastern border. All my misgivings aside, the Germans do make some good products, but they come at Euro and cross-Atlantic shipping premiums. Just think of it this way, you're not feeding the Chinese.

Sorry, skewed off topic a bit. My engineering colleagues with BMWs drank the Kool-Aid. All seem to have a common door window problem, but still love their cars despite this simple problem that cost $500 or so to repair. Tuning a car for a specific battery is over-engineering. The electronics should auto-tune, but that doesn't keep techs in jobs now does it. Consider Germany is a socialisitic country and shut down American operations here locally to return jobs to Germany. A concept I can agree with, but not a capitalistic decision as we are accustomed too, our jobs went to China instead for the most part in regards to manufacturing. Look up Siltronic if you like more details.

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