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Dear Mr. ,
the barrel of model 601 is glued to the barrel
sleeve and cannot be removed without damaging the barrel The barrel is pressed into the support. If you want to bluing the barrel
sleeve again, the system must be completely disassembled and the complete barrel assembly with support and
sleeve (see attachment) must be blued. This is how we practice this. I hope I could help you and remain
Mit freundlichen Grüßen l kind regards
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