Airsoft guns are designed for specific size and weight projectiles. Firing a heavier Nerf dart could put stress on the internal components and potentially cause them to break, leading to malfunctions or injuries. It's important to prioritize safety and make sure the modifications are done responsib...

Steel ball bearings are good fun, but they do bounce back - but not actually fast enough to cause injury (or so I find). They are among the few ammos actually capable of making holes in steel plates. You're right about steel ball bearings being fun for slingshots, but let's address a couple points ...

The length of the barrel can affect the accuracy and range of your Nerf blaster. Experiment with different lengths to find the sweet spot for your setup.