Iron Spider Webshooters - Avengers: Infinity War

This model was created using reference images mainly from Hot Toys' website.

The scaling is currently set to fit my wrist, with the inside being around 63mm wide.
Looking at the model, it does seem a little long with the bottom point being a little close to the elbow compared to some reference images, however it really just depends on how the model is scaled in relation to your wrist width.