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Paintball semi/auto Sniper Plans - UPDATE x99

A place to ask general spud cannon related questions.
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What do you think?

Crazy!! I want one!
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Ehh, its O.K.
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Paintball semi/auto Sniper Plans - UPDATE x99

Unread postAuthor: Hailfire753 » Sat Oct 13, 2007 7:52 pm

Hey fellow spudders! (Feel free to skip the text and go straight to the pic) Also Updated 12/4/07 see page 3

Recently I have become interested in Paintball, and I was looking for a kick-a** sniper gun. As I searched, I found that paintball sniper guns were a nearly non-existent category. I finally found what I was looking for, the coolest marker I had seen. Then I saw the price. :shock: 500-700$ was not in my budget.

That got me thinking... :idea: ...why not make my own? Searching spudfiles, I found that there were many like-minded people. However, most the guns I found fired in one burst. In most paintball fields they do not allow "shotgun" rounds or metal-piercing velocities. Darn. :evil: There were few semi/auto guns that were feasible, as clouds and vortexes are not very usable for paintballs.

Then I found the Slider and the GB semi, both by Clide. I took design ideas from their diagrams: The Slider and The GB Semi. If you do not understand my diagram, see these forms! The Slider shot paintballs semi-auto at a high velocity, but the pilot air was wasted. The GB Semi was more efficient, with no waste, and shot golf balls semi/auto. By scaling the GB Semi down, I came up with these plans.

The only problems with this setup was that it was attached to a compressor, so was not portable. I found how to make my own CO2 meter here, which would save me about 75$ than buying one. Unless there is a dirt-cheap one on e-bay... The regulator would also control paintball velocity by changing the psi. I also fit in a shock pump, and the quick-disconnect could be used with a compressor or regulated CO2. Also, CO2 is generally not good for PVC, as the cold temperature makes it brittle, so I added a liquid-to-gas expansion chamber. This might be made with ABS or some temperature and pressure resistant pipe. Another difference is that none of these guns are capable of using a non-airtight hopper efficiently. I will try to change that.

I added a hop-up and muzzle break to add to the sniper look and increase range. The barrel can be exchanged for a rifled, non-hop up barrel, or a longer or shorter length.

And finally, I wanted this gun to have looks. I wanted it to look the part, kind of like the Antimaterial Cannon. I am thinking of heat-forming sheet pvc to form a casing for the gun! Is this possible? To top it all off, I will add a laser and scope.

I am unsure of how efficient this gun will be, and if I can pull this off without a lathe. If all goes well, I hope to enter it in some kind of competition, so I was kind of reluctant to release the plans. My gift. :lol: Please critique!
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Attachments
closeup.jpg
Here is the close-up of the bolt and piston mech. It is a little bit de-formed from enlargement.
Paintball Sniper updated.jpg
Behold: THE paintball sniper. This pic should be self explanitory. The entire inner workings will be encased in a heat-molded PVC shell! Be sure to enlarge!
XM-500 Paintball Sniper.jpg
This is the new design. See page 3 for details.
Last edited by Hailfire753 on Tue Mar 25, 2008 12:49 am, edited 6 times in total.
UPDATED MARCH '08
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Unread postAuthor: LikimysCrotchus5 » Sat Oct 13, 2007 8:23 pm

This looks great! 8) From what it looks like in the pic (i felt like skipping right to the pic as you said) and ic that you have the piston valve for the chamber and you have a bolt for the barrel. That design looks good. Ive been into painball for 2 years or so and my friend is a really good paintballer and he is in all these tournaments and gets really good guns for prizes and all that kind of stuff. From what i have seen in paintball guns, it looks like it shpuld work fine. Now would the trigger be a blowgun because i dont c anything in the pic and i didnt read. This looks like it could be a genuine paintball gun. I would maybe have somekind of regulator though if you want to play in games. But it is awesome though. Nice Design! :D
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Unread postAuthor: Hailfire753 » Sat Oct 13, 2007 8:27 pm

Thanks for the comment and complement!

The trigger it attached to a string, which pulls the sear back and releases the piston. The string is grey, so it kind of blends in. I was thinking of building in a reg. buy I decided that it would be eazier to snipe if the tank was not attached to the gun. The tank would be held in a backpack with a regulator. A pressure-tube would connect it to the gun.

I edited the string to make it more visable and labled the sear.
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Unread postAuthor: Acdcmonkey1991 » Sat Oct 13, 2007 8:44 pm

Also, CO2 is generally not good for PVC, so I added a liquid-to-gas expansion chamber.
co2 is only a liquid for a period of 18 degrees.
Btw nice plans :D
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Unread postAuthor: Hailfire753 » Sat Oct 13, 2007 8:48 pm

Hmm... I got the idea because most paintball guns have an expansion chamber, as CO2 tanks contain liquid (if I am not mistaken). Do you think I would be able to use SCH 40 pvc @ 100 psi without worrying about it becoming brittle and frangmenting?


EDIT: HA HA, I knew that last poll option would be a big hit. Come on guys, I innovated! Heat-molded outer casing? CO2 expansion chamber? Hop-up and Muzzle break? Hopper? Shock pump?
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Unread postAuthor: SpudBlaster15 » Sat Oct 13, 2007 9:22 pm

Valve/loading mechanism - A direct copy of clide's design.

Heat molded outer casing - If you can get it to work, I will give you some credit.

Hop up and muzzle break - Have been done before MANY times.

CO2 expansion chamber - Has been done before.

Hopper - Has been done before MANY times.

Shock pump - Has been used MANY times, and why would you need a shock pump if you are going to be using regulated CO2?

It's a cool design and should work well, but don't try to take it as your own.
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Unread postAuthor: Hailfire753 » Sat Oct 13, 2007 9:28 pm

Yes, you are right about this, and I know what you mean. By innovation (in the edit), I mean adding on to Clide's design. In his original topic, many people said that they would like to see his ideas used on a smaller scale. I did this and added to it. Basicly, these things have never been combined at once (at least on these forums), and I have never seen a field-legal semi/auto paintball gun that is (theoreticly) as compact and usable as a storebought one.

The shock pump is for home use, when I do not have a Co2 tank. Also, if I run out of air in mid match I can use it. Can you give me a link to a gun using a storebought hopper? I would like to see how they used it. Thanks for the critique!
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Unread postAuthor: NewB » Sun Oct 14, 2007 11:28 am

I would be careful with putting a scope on there because if it gets hit by a paint ball... You might want to get a red dot sight or really strong scope covers.
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Unread postAuthor: Hailfire753 » Sun Oct 14, 2007 4:34 pm

I have a sheet of plexiglass or PET to cover the scope. Or I could just get a cheap walmart scope. :lol:
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Unread postAuthor: Hubb » Mon Oct 15, 2007 4:40 pm

Coming from someone who has a lot of knowledge of this paintball subject (especially sniping :D ) I suggest you save up and purchase one, that is if you're looking for a paintball marker to use in the field, against opponents.

If you do end up buying one, you should still build this one, you know, for s*** and giggles.

I would assume that you saw Special Ops Longbow. If so, it is a good sniper (a very good one), but if you are just starting out, it may be too much to start with.

If you are really interested in sniping for paintball, send me a pm and I will hook you up (not posting any info on the thread, in fear that it will steal the subject).

Anyway, nice gun.
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Unread postAuthor: Hailfire753 » Mon Oct 15, 2007 4:51 pm

Thanks! I will PM you.

Why do you think I should buy one as well? I was thinking of renting a semi every time I would play, and making the sniper to keep at a sniping location to fall back to.

Do you think a homemade one, using clide's design, could match the range and accuracy of a regular paintball gun?

Clide was able to get 6 rps at metal-peircing velocities, but I need about 10 rps at 280 fps. Possible?
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Unread postAuthor: Hubb » Mon Oct 15, 2007 4:53 pm

Personally, I don't think any homemade paintball gun (without proper tools) will match that of a purchased one.

The other questions will be answered in the PM.
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Unread postAuthor: ShowNoMercy » Mon Oct 15, 2007 5:06 pm

Well what are you specifications? Cause granted a homemade gun wont stand a chance at a speedball game but perhaps in a backwoods type match it would be some fun.
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Unread postAuthor: Hailfire753 » Mon Oct 15, 2007 5:56 pm

I do not really have the proper tools to make this gun, or any piston gun for that matter. I do not have a lathe, so I will use a dremmel/special stand as one.

This gun would be exclusively for woodball, used with a ghilly. I do not need a super fast rate of fire, as it is mostly used as a sniper. Of course it would not stand a chance in speedball (I have never seen a speedball sniper before) :lol:.
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Unread postAuthor: Hubb » Mon Oct 15, 2007 6:16 pm

A lathe is nice, but not necessary to construct this. One could purchase fender washers, or make PVC sheet from pipe.
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