A gun much unlike any other, the K2 v.2 utilizes a two-stage handle pump to fire four shots consecutively with each pump at a range of 20-30 feet. No firing pins, no triggers, just push, pull, and repeat. What does this mean? It means that you can unleash a rain of plastic upon your enemies at a rate of 4 rounds per second (depending on the user).
The key to this gun is in the two-stage handle pump. Originally designed to rotate a cog, the teeth within the handle are raised when the handle is pushed, causing them to set off a firing hammer consecutively as the pump is pushed. When released, the teeth are lowered, allowing the pump to slide back past the hammer without any interaction.
I know that 20-30 feet is a relatively low number, but hey, this thing is as close to fully automatic as a practical gun can get. While building this, I have labeled spots that require improvement, including an area that requires bad K'nex geometry (I'm slightly embarrassed) to function. I really hope that you guys can build upon the potential that this gun offers, and at some point, my goal for this gun is for it to hit a range of 50ft. Whether or not that will happen, well, that is up to us, so what do you say we get started!
-No broken/modified pieces!
-Uncontested rate of fire
-Easy to pump
-Lots of room for improvement
-Unlike anything you have ever seen!
-Low turret capacity (try equipping an 18-shot turret)
-Comparatively low range (20-30 feet)
-Small amount of bad K'nex geometry :,(
Hope you like it and I really want to see what improvements you guys can come up with!
Step 1: The Handle-Pump
1. The driving mechanism around which this gun revolves, the Handle-Pump is designed so that it activates only when pushed, and deactivates while resetting, allowing it to slide past the hammer.
2. The teeth-these are what comes into contact with the hammer, forcing it back and then releasing it. Build these
3. Exterior handle plates-build these. Take notice to the blue rods on one plate but not the other.
4. The interior handle plates-build these. Don't forget the white rod labeled in the image.
5. The center handle plate. Make sure to remember all of the white rods.
6. The exterior plates of the tooth housing. Notice that one has rods and one doesn't.
7. Add the teeth and attach two red connectors to the whit rods as highlighted in the image.
8. Attach the second plate of the tooth housing.
9. Attach the interior handle plate to the exterior handle plate.
10. Attach the center handle plate, along with the tooth housing as shown.
11. Attach the second interior handle plate.
12. Attach the final exterior handle plate.
13. Add 2 (one on each side) #16 rubber bands where shown.
14. Make the rear guide plates.
15. Attach them to the handle and tooth housing as shown.
16. Make the front guide plates. Notice the white rods on one of them.
17. Connect two front guide plates as shown.
18. Complete the front guide by attaching the final plate.
19. Attach the front guide to the rest of the part to complete the Handle-Pump.
You're getting there...let's move on to the Stock.