The F-1 Lego Grenade + Rocket Projectile Launcher

This is the instructable for my grenade/ rocket projectile launcher. The gun shoots my own kind of big projectile (a rocket), but also shoots a knex fragmentation grenade by https://www.instructables.com/id/Project-X4-XPLODER-Mini-Knex-Hand-Grenade/

Some pros of this launcher are:
-very strong
-can shoot many different projectiles, of different sizes
-accurate(for a grenade launcher)
-range of 25+ feet (depending on what RBs you use)
-the rocket has lots of stopping power
-looks cool

Cons
-long reload time (about a minute)
-no magazine (single fire)
-the top moving panel is annoying
-fairly heavy

Check out my new Website for all my Lego Guns, and videos!!!
http://sites.google.com/site/bblegobrickworks/



The launcher uses a lot of rubber bands (about 10, but depending on the rubber bands, you could have less). The instructions for the rocket is also included.

Easy

This is the underside of the launcher, as well as the underside support for the rubber band holders.

This is the 'run way' of the rocket. The lengths are: 6x52 (except for the back part with the hole)

This holds the firing rubber band on one end, and the counterweight rubber band holder on the other side.

The front may look weird, but just follow the steps.

These hold the rubber bands in place when firing.

Put together the underside, trigger holder, and barrel.

The top cover is really easy to make, and you can use whatever sight you want if you dont like mine.

In this step, I used 3 Rubber Bands, but you may have to use more (or less) depending on the strength of your rubber bands. I also used a rubberband to hold the top flat.

I used 6 Rubber Bands- 2 Sets of 3 Rubber Bands. Each set has 3 bands knoted together into a chain.

This is an easy rocket to make for the launcher. To fire, just put it in front of the trigger with the rubber bands loaded. Another alternative is a fragmentation knex grenade which I DID NOT MAKE. Its called the X4 Xploder, by Darth Trainman, which works with this launcher as well. Heres the link to his instructable: https://www.instructables.com/id/Project-X4-XPLODER-Mini-Knex-Hand-Grenade/.