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Thread: HK O-RING ON BARRELL
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December 11th, 2011, 04:18 PM #1Active Member
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HK O-RING ON BARRELL
Can anyone tell me when your supposed to change the little rubber o-ring that comes on the 45's HK makes and puts on the end of the gun barrell for barrell to frame lock up.
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December 11th, 2011, 05:11 PM #2
Re: HK O-RING ON BARRELL
Others may have better advice but when I had a usp .45 Tactical I didnt change them until they showed actual wear and the barrel had some play. The gun will run without them so I never gave it much thought. When I sold the pistol I still had most of the rings it came with.
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December 14th, 2011, 07:17 AM #3
Re: HK O-RING ON BARRELL
^^ That ^^
Or when it breaks. I read a test somewhere where a guy shot groups w/ an HK45 off a sandbag at 20 yards or something, both with and without the O-ring.
There was nearly zero difference in accuracy.
I'll post if I can find what forum, article, etc. it was in...
Regards,
Bones
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December 14th, 2011, 10:07 AM #4Grand Member
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Re: HK O-RING ON BARRELL
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December 14th, 2011, 01:32 PM #5
Re: HK O-RING ON BARRELL
IIRC - the 'O' ring was added to keep the H&K in the mil-specs - a barrel to slide " accuracy retaining device" was required (as in the 1911's barrel bushing) - this was done when the U.S. announced they were considering "service testing" for a new .45 ACP pistol for the military - an event that actually never occurred - but got a lot of responses from a bunch of manufacturers and provided a new wave of heavy duty .45s to the civilian market.
Jim Hauff H&R Collector In memory of my friends Bill Goforth and Jim Ritchie.
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