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I wanted to take a moment to acknowledge this wonderful web site. I have been visiting daily for quite some time, but have only recently registered. The amount of knowledge, and professionalism on this forum, makes me want to belong.

I recently received my HK45. This is my first HK firearm with an O-ringed barrel. I am looking to get an idea on how often the O-ring needs replacing. I understand that the number of rounds, and years will determine this, but I was just hoping to get some feed back. Should I stock up on these?

Thanks for any imput.
 

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I have 5k thought my USP45CT and haven't replaced the O-ring yet. LIttle lube on it after cleaning and you're good to go. I use TW25B as it doesn't burn off as quicky as regular break-free, etc.
 

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Usually, they only have to be replaced after some overzealous knucklehead tries to pry it off with a sharp object for "cleaning". The factory says 20K rounds. But I know of Tacticals with 30K plus, o-ring still going strong.:53:
 

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Welcome to the forum!!! I have had a tactical for years and put couple thousand rds through and still on the original o-ring. As stated before, dont take it off when you clean it and will probably last forever.
 
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