A crazy custom build alright. Tactical Toolbox shows his modified NERF Gun that can shoot real bullets... "NERF GUN Mods to Shoot REAL Bullets? Can we transform this Nerf Gun into a Nerf Gun that shoots 22lr ammo? In this video we're going to find out if Nerf Gun mods can transform it into a Ruger 10/22.

(NOTE: I didn't create a gun, I simply placed an existing gun, 10/22 Serialized receiver inside the Nerf housing. A 10/22 receiver requires a 4473 Federal Background check and one must be at least 18 years old  to purchase. Don't attempt this at home)

The barrel used is 18.5-inch in length and it measures 34-inch in OAL."