Not meant to be disassembled by the owner. If you have, you need to take it to a gunsmith
5-50 USD
Best left to a gunsmith.
No serial number data base. Most of these were from the 1960s
About 30-40 USD
Best left to a gunsmith
25 USD
5-45 dollars
RG model RG31 Caliber 32 long manufactured by RG industries, Miami Florida
Ask a gunsmith for help
20-60
No sn data available