Hi, this is my knex grenade launcher. It shoots about 15 to 35 ft. You can make it smaller on small guns and also you can make it bigger with longer rods to big knex gun. This one is a medium size. You can attach it to any gun as u like like i attach it on my sniper :D so i hope you love it. O and one last thing the gray circles look at pic to see u always need that for any size knex grenade launcher.
Step 1: Ram Easy Part
Tape the ram!!!
Step 2: Blocking Tryger
Blocking trigger wen you want to use u have to pull up on the black part.
Step 3: Bollet
put the black piece in the holes of the barrel.