That strange metal piece found inside your oven may be an anti-tip bracket, an important safety part that comes with many freestanding stoves.
It’s designed to anchor to the floor or wall and secure one of the stove’s rear legs.
Without it, the range could tip forward if someone leans on the open oven door or places too much weight on it.
So, don’t throw it away! Check your stove’s installation manual and make sure the bracket is properly installed.