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Silver "solder" IS brazing.
Brazing, whether it's done with real silver, brass, or one of the modern alloys, is a process that needs metal to be heated to at least 1100 degrees, which is about a red heat.
This destroys finishes.
There is a SOFT solder that many people THINK is a silver solder because it contains about 3% silver.
This is in fact a true soft solder that melts at temps lower then 600 degrees.
The silver content is to make it stronger, and to prevent tarnishing like lead solders do.
Since it IS NOT a true braze material, it's unacceptable to the ATF for attaching muzzle attachments.
The least damaging method other than blind pinning is TIG welding.
Because the entire muzzle and attachment don't have to be heated red hot like with braze, heat spread is much lower, and any finish damage is limited to the immediate area of the actual weld.
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