Posted by knezz on 2/17/2007, 9:54 pm, in reply to "p239 9mm to 40cal conversion" Regards,
You shouldn't attempt to convert the 9mm to a .40 or .357. The frame on the 9mm isn't constructed for the power of the .40 or the .357. The .40 and .357 are the same frame and you can go from either or those down to a 9mm but not the other way.
Knezz
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