An airsoft chronograph is a small yet useful piece of kit that will measure different aspects of your airsoft guns output. All chronographs will measure basic muzzle velocity and can give your FPS (feet per second) readout – especially helpful if you are playing at a site with total airsoft gun speed restrictions. Different models may offer different features such as rechargeable batteries, Bluetooth, multi-function measurements and mobile apps. Some chronographs can be used with different sizes and weights of BB. Some of the larger chronographs can even take readings of larger projectiles such as paintballs. As a result, it is important to look into the different chronograph models available online at Just Airsoft Guns to find the one that meets your requirements.