This is the Vyper Arms Mini Rocket Propelled "Firework" Model A1 (MRPFA1)
This model has a built-in shape charge in the front end of the warhead and has room for two Estes model E11-0 rocket motors, while you can make your own launch controller I am using an Estes launcher that takes six AA batteries.
Let's go over how to put this thing together!
1. starting from the front of the model you will notice that there is a large ball-shaped object this is the safety cap that prevents accidental detonations keep it on at all times unless you are ready to fire!
2. second you will notice that there are two cylindrical objects these two objects will make up your impact-detonator, you will need a .223 round a roofing nail and some hot glue or super glue. first, remove the bullet from the end of the round and insert the round into the longer cylinder, then place the smaller cylinder over the protruding end of the round and glue it in place, next insert the roofing nail into the hole on the smaller cylinder and place a SMALL AMOUNT of glue to hold it in place. Your impact-detonator is now finished!
3. Now this part is the warhead, you can insert the payload through the small hole on the larger end of the warhead now this is where you insert the firework definitely NOT gunpowder, napalm, tannerite, etc ;) once done with that you can insert the impact-detonator with the nail side sticking out. on the opposite end of the warhead, you will insert two Estes E11-0 rocket motors, force the first one in and tack the second one in place with some glue.
4. The last two pieces are the main body of the launcher the forward-facing part has a Picatinny rail on it and the rear part does not. You will notice two hinges one on the top and one on the bottom, the top one is fixed meaning you should not have to remove the bolt that actuates the hinge during normal operation. However, the bottom hinge is not fixed but should be secured during operation. This RPG launcher is supposed to be fired with your left hand over the front end and your right holding onto the mini grip it is important that you fire this from your right shoulder because the blast guard can only protect you if you are firing from your right shoulder. On the rear part of the launcher body, you will notice a small hole where the two halves of the launcher meet. This is where the ignition wire for the rocket leaves the body and goes to the launch controller. The reason I added Picatinny rails to this design is so that you can make a custom bracket for your launch controller setup and mount it on the side of the rocket launcher body. Finally, if there is not enough pressure to launch the rocket from the body inserts the disc-like object into the rear rocket body.
5. Instructions to launch after assembling the warhead/rocket.
1. insert the rocket in the correct position
2. take out the bottom pin in the rocket body and flip open the body
3. insert rocket motor igniter and close body with the wires coming out the small hole on the side of the rear rocket body
4. insert the pin or screw in the bottom hinge
5. place rocket over your right shoulder while grasping the mini grip with your right hand and left hand on the launch controller
6. remove the warhead safety cap
7. press the launch button on your launch controller