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American Lock Co. BumpStop ID?


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#1 IronSmith

IronSmith

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Posted 27 February 2009 - 12:04 AM

Hello all - I'm providing a client with a tool kit designed to open American Lock Co. 5200 series locks, as the client uses a great many of these and is running into a lot of problems with employees losing keys and needing to open the locks in a more austere setting where a conventional smith is unavailable.
I've been spending some quality time with the 5200 trying to re-learn its ins and outs and make sure the kit delivered is what is needed, and just having fun with a lock I haven't played with a lot.
Of course, bump tools are part of this kit.
However, a question has arisen that I am unable to answer. American advertises their "BumpStop" technology for their locks, however we know this hasn't always been available.
The question is, is there any means by which to identify 5200 series locks made prior to the introduction of this "technology"?
And, realistically, how much more resistant to bumping does said "technology" actually make these locks?

Thanks in advance!