A large range of detail parts for the military modellers and auto modellers by Kerroby. All cast in white metal. Easy to work with, most castings just need a light file to remove any mould lines. Some detail kits need a small amount of assembly. Take a minute to check any mounting pins are clean of flash and any locating holes are cleaned out, some may need a bit of drilling. I always prefer low melt solder for whitemetal parts. If joining a whitemetal part to a plastic or resin part then any of the typical superglues will work, epoxy is also an excellent option, both available at the link below. Ensure all mating surfaces are very clean for best glue adhesion.
Suitable Superglue and epoxy here