These sights are designed to be used with large projectile firing blasters like Nerf Mega or Mega XL, for example i mainly use them with my Wildstyle. The name derives from the holes on the front sight that make the ladder unlike normal ladder sights that have them on the back sight.

Printing Instructions

Both sights need to be printed on the flat face on their back. in the files is also included a pin to install them without a nut and bolt

Hardware

If you want you can use two M4x30mm bolts and two M4 nuts.