NERF Mega XL Dart Refill, Includes 10 Mega XL Whistler Darts, Largest Mega Darts Ever, Makes Whistling Sound When Fired

If your Nerf requires the mega XL bullets, then these are it. They work perfectly and whistle as they launch 50 feet through the air.

right fit for this toy.

I bought mine for aerial bombs for my R.C. plane...they whistle great coming down.

this is a good waty to get some mega xl ammo. the ammo whistles and its being used now in my big rig