I don't know the extent of the damage, yet. The stock fix should go easy. Wood dowels, glue, careful with the clamps should do it.
C3, has your man done a side by side? I wonder how that could affect the solder.
"A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
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Former President of the ECPT (Eifel Combat Pistol Team)