Easy But Powerful Knex Grenade!

 Quite possibly the best Knex gernade for someone who wants to obliterate any target.

Step 1: Main Assembly

 Just build what you see, there is no hidden invisible pieces!

Step 2: Loading...

 Put the pieces on your grenade.

Step 3: Preparing to Fire...

 This is the tricky part.

Step 4: Firing!

 This part is where it can all go so wrong, or so right.