I recently picked up the incredible vintage Masudaya Robot YM-3/B-9 1/5 scale talking vinyl kit from Lost in Space at a local comic show. It’s a gorgeous kit that I quickly build up, but the claws that come with the kit are a letdown in accuracy compared to the rest of the kit. I designed a simple, drop-in replacement part that is more screen accurate and fits your robot without any modification, available in red (and other colors) plastic now from the PRHI Shapeways Shop. You could potentially cut the claws apart at the middle and make them articulated the same way the stock kit parts work, or leave them as-is for a no-effort upgrade to your trusty bot.
Prometheus Rising Studios 