# How to implement attachments
## Overview
To modify the current recoil animation, **PRAS** has the Input Scale feature using these methods:
Input Scale methods.
* **Scale Input**: applies an Input Scale.
* **Unscale Input**: reverts an Input Scale.
* **Reset Input Scale**: resets any applied modifiers.
**Input Scale** is a struct that includes these properties:
Input Scale properties.
## Use-case
When attachment is equipped, make sure to update the current Input Scale:
