I did a presentation on the CLAWS weapon system for a similar instructor course the FLETC style general instructor course, not firearm specific. I did the full powerpoint with pictures, diagrams etc…
C Close
L Long Range
A Adaptive
W Weapons
S System
Full dress BDU’s, bloused pants, cap with perfect forward lean, boots with a high shine. Walked in serious as all can be carrying one rifle sized pelican case with the weapon and one small pelican case with the ammunition. Went to the front of the clase, plunked down the cases and fired up the power point.
In my most serious dead pan SWAT guy style, I related to the class that I would be presenting a new weapon system for our dept that has yet to be released as public information. I related that I needed to obtain special permission to be able to present it in this classroom setting. It had been decided that this class was going to be selected to debut the weapon system.
I continued to cover and reinforce the firearms safety rules on my powerpoint as we were going to each be handling the weapons system. Now that I had everybody’s undivided attention I popped open the Pelican cases and presented the CLAWS weapon system.
I first opened the Pelican ammo case and pulled out genuine ammo boxes and spread them out. I also laid out safety glasses. Now this was getting interesting. This was not a firearms class, so people started to get interested. I guess they thought they were about to see something really cool.
As I continues I popped open the rifle case to present the weapon. I then reached in and pulled out the close range weapon, Pic from my powerpoint, of course I held up my fingers without a rubber band and everyone was a bit confuzzled at this point.

I then reached back in and presented the Long range weapon (in sniper mode) again no rubber band.

The class was a bit confused and I then presented the “ammo” the rubber bands stored in actual ammo boxes. At this point people really caught on and the mood shifted from cool gun stuff, to confusion, to humor.
I discussed various and multiple ammo types that it could fire, velocities, distances, terminal ballistics etc…

Discussed history of the rubber band and how it translated into office combat. I related that this was a very serious topic around our office of 50 guys and it is a well kept secret. I instructed on how to safely load, unload, speed / combat reload etc, etc, etc…
To validate that my audience had absorbed the material that I instructed I split the class directly in half. First half of the class came to the first row, where I had eye pro waiting for them. After donning the eye pro I told them on my commands that they would be executing a load, unload and reload procedure. Again in a serious dead pan style I barked out the range commands…“On the load command, shooters will load their weapons and verify that they are loaded…Line ready?..LOAD!” I did this also for unloading and reloading.
Then as a test of their skill and allowing them to actually fire the weapon system of their choice. I instructed them that they would start with an UNLOADED weapon. On the “GOING HOT” command they would then see a target flash on the screen and they would have 3 seconds to load their weapon, acquire the target and fire. I then bark out “IS THE LINE READY? THE LINE IS READY…GOING HOT…” I then fire up the powerpoint and the large Bullseye target appears on screen for 3 seconds and everyone loads up and launches rubber bands at the screen.
On the second relay, one guy had a slip on on the loading and the rubber band snapped forward onto the table. I then yelled out “CEASE FIRE, CEASE FIRE” and everyone stopped and stared. I told them to “MAKE THE LINE SAFE”. I then told the class that we had an Negligent Discharge on the range. I gave remedial instruction on the procedure and continued. Poor guy turned red. 
It was actually hilarious and everyone had a great time. Definitely nothing like that has been pulled off before and it is one of those talked about presentations to this day. Much more fun than if I would have done something serious. In reality, I touched on all the main points taught in the course, with a good validation of my materials presented. Everyone had fun and sometimes it is more fun to have a good laugh. It definitely broke up the monotony of some of the presentations. There is a good hint of the above in my actual teaching style. 