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Old 04-03-2009, 11:42 AM
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photoman photoman is offline
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Welcome to the Forum Fathergoose1.

The -2 stands for the second engineering change to the Model 637. The second engineering change for the 637 was the introduction of the internal key lock system.

Regarding IWB holsters: I use a Kramer IWB#2 for my 637.
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