That is a four inch barrel on it, brass (13/32). It shoots nanos and gets an estimated 45 feet. I don't mind that it has not that good of a range. It is ment for assassin games where you need to have a gun, but can't be seen with one, like when shopping.
The plunger tube is 1 inch CPVC, the barrel seath is 1/2 inch CPVC, the plunger head is a 1/2 CPVC end cap.
This is the gun taken all apart. The spring perch is not pictured, it is still in the plunger tube, it is hard to get in and out. As you can see, the plunger shaft has slots cut in it; two screws enter into there and guide the plunger so that the catch hole doesn't turn away form the catch pin. The plunger head is not glued on, it is just friction, it works fine.
The gun can have the 45 degree cupler on it so it is more like a pistol, or you can insert it into some 1/2 inch PVC at the end of the gun that also the plunger head hits, to not put stress on the slots. In the end of the 45 degree coupler is a half inch reducing bushling. In order to get the coupler to fit on the end, I had to showlow out room for the screw head.
Right now it has a streched maverick spring in it, I think it would get better range if I replaced the spring. I made a second one with a handyman spring in it and it just made the trigger pull ungodly hard. It broke the clothes pin I was using. It didn't even increase range to the point it would be exceptable. There is no way you can shoot it when you need to. I recommend a weaker spring. I haven't tried it, but I would think a stock NF spring would do well.
Edit: Thanks Piney!
PINEY EDIT:Okay, I fixed your image tags. Now they show up on page. If you resize your first image to match the second one it won't be so ginormous.
Sorry it took so long to get a write up up.
• 1 inch CPVC
• ½ inch CPVC
• ½ inch CPVC couplers (2)
• ½ inch CPVC end cap (1)
• Right size O ring (I can’t remember the size; just pick out one that fits tightly over the end cap and inside the handle.)
• 1 ½ key ring (1)
• Clothes pin (1)
• Small, wide head nail (1)
• Electrical tape
• #6 ½ inch pan head sheet metal screws (6)
• Barrel Pipe
* ¾ inch CPVC if your barrel material doesn’t fit in ½ inch CPVC
* ¾ inch or ½ inch reducing bushing, what ever size you are using as your barrel sheath.
• 135 degree 1 inch CPVC coupling.
• Spring, I don’t suggest the handyman spring. To big compressed length.
• Dremal with cutting disk and sanding drum
• Drill, drill press preferably
• Hack saw if you want
• Hot glue and hot glue gun
1. Cut your handle to the desired length. I cut mine to 6”.
2. Now you need to make three spacers. Take one of the ½” couplers, and cut it in half. Now sand out the inside of each half. Now cut another coupler in half and sand it out. Rap them in electrical tape until they fit nicely in the one inch CPVC handle you cut.
3. Now take two of them and line them up along side the handle like this
The closer they are, the more precise you have to be. Use a marker to make a mark in-between them; this will be the hole where the catch pin goes through. Use a drill or drill press to drill a hole with a 1/8 inch bit.
4. Drill a hole in your clothes pin where you want the catch pin to go through.
5. Now you need to cut the plunger shaft. It needs to be the same length as the handle.
6. Drill holes in the spring perch spacer, screws will go through here and they will also keep the plunger shaft from spinning. The bit size is 1/8 inch. The end of the spacer closest to the catch pin can not block the hole that the pin goes through. Try to get them about directly across.
7. To find out where the catch hole will be in the plunger shaft, you need to take your spring you are using and put it on the plunger shaft. Make sure the screws in the spring perch are in, but not in enough to block the way of the plunger shaft. Get a clamp and pull the plunger tube out until the spring is fully compressed. Now, while it is still being pulled back, clamp the plunger tube so that it will not go forward at all. Now use a screw and screw it in the hole. This will make a small hole in the plunger shaft. While it is still clamped, put some screws in the spring perch, which should be in already with screws in, just not screwed in all the way. Release the clamp and remove the plunger shaft. Take the Dremal and drill and 1/8 inch hole exactly on the hole the screw made and then widen it with a grinding tool. To test if it is big enough and in the right spot, put the spring back on and put it back in the handle, and pull it all the way back, drop a nail in the catch hole and work it around a little. It might take a little bit of work to get the nail in the hole. If you can’t get it, take it apart and make the hole bigger. If you get it, take it all apart.
8. Now we are going to put in the end caps. These are the other spacers you made, they will be flesh with the end. One on each end. Use a drill and a 1/8 inch bit. Put two screws in each, you will need to cut down the screws with the cutting wheel.
9. Take the holes you made with the spring perch in step 7 and use a cutting wheel to make slots in it, it might be a good idea to use a square. Use a spare screw to see if they are big enough.
10. Glue on your clothes pin, lining up the hole with the other hole in step 4.
11. You may have to epoxy on your plunger head. Now this part takes a very steady hand or a drill press. Take a 1/8 inch drill bit and set up the drill press, drill a very shallow hole and then lock the bit in place, spin the head so that it makes a grove. This is where the o-ring will sit. From time to time, take it out and put the o-ring on and see how well it fits in the handle. When it is pretty tight, but will fit, grease it up and see how well it slides now. It should slide great.
12. Now put it all together and see if it works, if it doesn’t, adjust what’s not working. Once everything is working, continue to step 13.
13. Cut the catch nail a little so that it isn’t to long. Then stick it in the hole in the close pin a clamp the close pin to that it is open and that the nail head is flush with the clothes pin. Then put a big blog of hot glue on it.
14. Drill a hole for the key ring in the end of the plunger shaft and put it on.
I think that is it, if you have any questions or I left something out, just ask. If you need other pics, just ask for that too and I'll get it as soon as I can.
Edit: Added information on stronger springs.
Edited by Cennipe, 20 April 2008 - 09:10 AM.