Knex Shotgun Type Thing

This is something i made a while ago. It has a magazine,grenade launcher, and a bayonette........ Yes i know the bayonette needs to be longer be i like it his way. Lets look at the pros and cons.

     Pros
     -50 ft range
     -bayonette
     -grenade launcher
     -magazine
     -sturdy

     Cons 
     -uses lots of pieces
     - needs stock