Do every nerf gun needs a specific ammo?

Yes they never use to but now nerf has come out with all this different types of guns such as the N-strike and different types like that, each type uses different ammo such as the old suction cup ammo and now there are darts that make sound as they travel through he air and darts that stick to velcro, some darts you can use in different guns, but some darts are smaller which are for the Nerf guns that use clips and belts to feed the ammo. if u look on the package it will tell you which guns that ammo is made for. i hope this helps a little bit.