Cordless Metal Cutter

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Electrical installation
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Hi,
I have been looking for a "GKM cordless metal cutting saw" for some time and it is obvious that it is discontinued with no replacement. Does anyone have any idea of what Bosch product can be used as a replacement for cutting metal conduit. Can i buy a GSK model and refit with a metal blade or are the metal blades a different size or thickness? 
The only other option is to buy the makita version but then i have to buy more batteries and a charge and carry them around with all my other stuff.
Thanks for any help guys.
Ben  :)
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Electrical installation
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In the same boat, been trying to get a gkm for ages, looks like such a great tool can't understand why it's no longer available, frustrating!