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Pump Shotgun Modification.

New favorite spring gun.

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#1 Forsaken angel24

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Posted 11 June 2006 - 03:40 PM

Originally I didnt want to mod this gun because I heard the catch is weak and the range isnt good and its too expensive and blah blah blah.
Posted Image
I was walking through the Outdoor store and I saw a few of them on the shelf. It was an open box so I cocked the gun and fired. It made a loud banging sound and my eyes lit up. $30 later I brought it home.
It fires 3 balls but the range is horrible and the accuracy is also horrible unless its under 10 feet.
Here are some pics of the internals.
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The second picture is of the catch and trigger.

Now onto the modification.

First take your gun apart. Then take off the big orange ball holder.
Then cut the closest groove to the big orange part.
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Ok now sand out the inside of the orange nub untill you can fit a 1/2"PVC coupler inside.
Epoxy the coupler inside. Make sure it is straight.
Epoxy the Brown Funnel like thing into the Orange nub.
After doing all that it should look like this.
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Now wrap some E-tape around a small peice of 19/32" I beleive it was 1.5" inches or so.
Lather it up in epoxy and put that in the brown peice so it fits snug in the narrow part of the funnel like peice.
Close to where the PVC coupler is.
After that has been put into place it should look like this.
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The 1/2" pvc coupler will hold the barrel straight and airtight. The 19/32" will allow me to get the dart closer to the air supply which always means good things when it comes to nerf.

Now lets talk about the spring. Its a good spring but it can be compressed more and the catch can handle more power too. So whip out your hot glue gun a small washer and lots of glue sticks. Normally the spring would sit inside the small brown peice at the end of the plunger shaft. By adding hot glue at the base, it will compress the spring further creating more tension resulting in shooting goodness. By adding a second thinner spring to the inside it adds even more tension creating better shooting goodness.
Thanks to Hexen for the Spring! The washer Is placed inside the big horseshoe of hotglue created here so that it stays straight when compressed.
Here are the pics of the plunger spring and alot of hotglue.
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I would have loved to use washers but they need to be the exact same size and I couldn't find any.
Now put the plunger assembly back in the white tube and now hot glue between the white, brown and orange peice at the top.
Posted Image

Now before I put all that back in place, I remembered the extension spring that would return the cocking handle to the front was rather weak and I wanted to strengthen that for an overall better feel of the gun.
Take the spring and loop it around the screw port and underneath the orange peice so it will sit snug.
The spring now pulls the handle back with more force making it feel like a better gun. Sometimes before it would only go like half way back. Here is a pic of how it should look after you have done the extension spring mod.
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Now I added some foam because this gun is fairly loud when it fired.
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Adding this foam seemed to ahve reduced the sound by maybe 20% which is pretty good considering I couldnt add much foam.

Now put it all back together and its time to make the barrell.

Take a 12" peice of 9/16" brass and add some tightening rings to one side. Now take around 11" of Pvc and nest the brass in the PVC. so that the tightening rings are visible when barrel is pulled out. Nest it inside the Pvc using e-tape and then follow it up with hot glue or epoxy when your sure you got it in the spot you want.
Posted Image
This barrel will work with the double coupler system.
I tried using several barrels, 8" 10" 12". All the ranges were the same except the 12 was really accurate. I think it can use the 12" because of its massive plunger chamber.

Ranges are great.
95'
102'
96'
102'
98'

These darts were ok but I am sure it can get better with some good darts. Ill post when I go range testing again.
In conclusion:
This gun packs a serious punch and I am glad I picked it up. The overall feel of the gun is just amazing. This gun doesnt have as much recoil because the plunger head doesnt actually hit the front like most nerf guns. Instead it is stopped closer to where the trigger is. It is a good thing this beast has a trigger guard because one false twitch on the trigger and bang! However The gun can be dropped while cocked and will not fire. The spring can be strengthened no more either. I tried but the catch wasn't catching. Here is a comparison photo and a comparison video.

Posted Image
Before and after Modification.

There you have it. Comments.flames,praises,questions?

Edited by Forsaken_angel24, 11 June 2006 - 03:40 PM.

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#2 Ryan201821

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Posted 11 June 2006 - 03:53 PM

Wow, that is amazing. I love seeing peices of crap being turned into powerhouses. I love it a lot. I wish I could get my hands on one of these. Where did you get it? I know you said an outdoor store but where specifically. Very nice mod and write up by the way.
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#3 warx

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Posted 11 June 2006 - 05:54 PM

A pioneer, that's what you are.

Excellent mod that you deserve a lot of credit for.
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#4 WratH

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Posted 11 June 2006 - 07:59 PM

That thing looks awesome, how's the stock feel?

P.S. You took us to the gun show for sure.
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#5 sam

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Posted 11 June 2006 - 11:15 PM

No sweet clip mod for this one?
Awesome mod though. Also which outdoor store did you get it at?
EDIT: Is there room for more improvement on this gun?

Edited by sam, 12 June 2006 - 12:44 PM.

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#6 baghead

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Posted 11 June 2006 - 11:18 PM

Ok, I officaly am ordering a couple of these online once my next paycheck comes. I've been looking for a reliable spring gun that wasn't a crossbow (because once the re-paint on sexbow 2 is done, I'm not going to want to use it) plus, just imagine how fucking sweet one of these badboys would look in Neon Blue and Green.

-bags

Edited by baghead, 11 June 2006 - 11:21 PM.

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#7 Agent X10

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Posted 12 June 2006 - 03:47 PM

Wow... That's pretty sweet. Nice mod. Does this thing have any particular name? I also would like to know where you got it -- I don't believe I've seen it in a store before. Yes, Bags, it would definitely look sweet in neon blue and green. If I find myself one, though, I'd definitely extend the stock. That one looks a bit on the short, and thus, uncomfortable, side.
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#8 roadrunner

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Posted 12 June 2006 - 04:37 PM

I have seen those guns at Cabelas so they might have them on the Cabelas website.
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#9 Ryan201821

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Posted 12 June 2006 - 04:51 PM

I have seen those guns at Cabelas so they might have them on the Cabelas website.


Just checked and they don't have them on the website.
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#10 baghead

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Posted 12 June 2006 - 05:24 PM

Both Bass Pro Shops and Tower Hobbies have them, they're called the Pumpshot Gun Foam Shooter or something.
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#11 roadrunner

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Posted 12 June 2006 - 06:00 PM

Actually they do have the pump action shotgun on the Cabelas website but it is called the foam shooter series. Foam shooter series

Edited by roadrunner, 12 June 2006 - 06:02 PM.

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#12 Forsaken angel24

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Posted 12 June 2006 - 07:40 PM

Wrath- If the feel of a crossbows stock was 10 out of 10 I would give this stock an 8 out of 10.

Sam- There is room for improvement on this gun. The improvements/clip mod are currently underway. I wanted to single barrel one so I could see what kind of power it had. Then add the clip system on the new gun and mess around with it. I wanted both a single barrel and a clip system. The blue prints for the next edition shotgun are pretty cool. Expect that in the near future. You might be able to squeeze an extra few feet out of the gun but the catch would be so sensitive it would be useless in a war. Currently modding the second Pump Shotgun.

Baghead- Your works of art belong in someones acid trip. :unsure:

Agent X- The second version of this gun will have a name. The stock isn't really that short and I have huge Silverback arms!

The stock gun you saw in the video is stock no more!
expect other write up soon.

P.S. I almost forgot.

Kirby I got another original mod for ya to add to the directory!
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#13 CaptainSlug

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Posted 12 June 2006 - 08:48 PM

Sold online through towerhobbies (they have the lowest price): http://www2.towerhob...p?&I=LXFPU9&P=0
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#14 Ryan201821

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Posted 13 June 2006 - 02:19 AM

Both Bass Pro Shops and Tower Hobbies have them, they're called the Pumpshot Gun Foam Shooter or something.


Thanks, Just purchased one. Should be here in a few days. Very excited.
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#15 sam

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Posted 13 June 2006 - 10:56 AM

How long is the chunk of hot glue used to compress the spring? Also do you know where Hexen got the second spring?
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#16 Forsaken angel24

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Posted 13 June 2006 - 07:10 PM

I never even measured it. I just kept adding hot glue untill range got better and better. Just look at the picture of the mound of hotglue. The glue is like adding another tow brown peices. So just go by that. Also the top of the hot glue has to be relatively flat so the spring isn't on an angle.

EDIT: Hexen found a bunch of springs and gave me some. I have no idea where he got it.

Edited by Forsaken_angel24, 13 June 2006 - 09:21 PM.

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I don't get my kicks out of you,
I don't feel the way I used to do.
I know its bad,
After what we had,
But Iím just not the angel you knew.

#17 Ryan201821

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Posted 15 June 2006 - 01:24 PM

I just got one of these yesterday and wow it is a great gun. I actually had a 8" barrel instead. It actually worked the best with my darts. Ranges are pretty close to what it says in the write-up. I suggest getting one of these. Here is the picture:
Posted Image
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#18 Forsaken angel24

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Posted 16 June 2006 - 09:24 PM

Within 5 days of posting this, someone went out and completed my mod. Awesome! Ryan you said your ranges were close. What kind of range are you getting?

I think I found a way to reduce the sensitivity of the trigger. I will post If I get and results.

EDIT: Ok I am back and I did indeed get some good results. I strengthened the torsion spring and the catch is alot stronger. This will allow the gun to be strengthened even more but I am happy with the range, The strengthened catch also means it will take a bit more finger pressure to pull the trigger. It is still a sensitive trigger but now it feels 25-40% less sensitive.

Here is a pic of the trigger,catch and torsion spring.
Posted Image
Now cut a washer in half and hot glue it in place after pushing the one side fo the torsion spring closer to the trigger. Hot glue on both sides of the washer. Keep the washer in place and allow the hotglue to dry. It should now look like this.
Posted Image
Posted Image
Now glue the nub of the torsion spring to the washer and add some more glue here and there just to be sure it will stay in place during the heat of battle. Now your done.

It is a small improvement but an improvement none the less. Replacing the torsion spring would be the best choice if you can find a replacement.

Edited by Forsaken_angel24, 16 June 2006 - 11:14 PM.

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I don't get my kicks out of you,
I don't feel the way I used to do.
I know its bad,
After what we had,
But Iím just not the angel you knew.

#19 Ryan201821

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Posted 17 June 2006 - 12:13 AM

Sweet I will probably do that to mine also. As far as my ranges I measured with stefans I got and average of 94.3' out of 10 shots. I recommend this gun to anyone. I am getting another.
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#20 Your nerf killa

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Posted 11 May 2008 - 09:39 PM

Nice mod Angel. Can anyone tell me where i can get these in California, San Francisco?
:(
Because i really want one of these,Thank you in advance.
:)
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#21 badger

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Posted 11 May 2008 - 09:43 PM

Maybe you should have sent him a PM instead of ressurecting a two-year old thread without anything significant to add.

Read the date of the last post before posting yourself. If it is older than a month, it is considered necroing a thread, something that is extremely erotic here unless your post is a needed contribution to the topic.
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#22 dooda

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Posted 16 May 2008 - 10:07 PM

I think a barrel mod watchumuwhooshiee where you put the darts in the barrel would be better than a clip personally. B)

Edited by dooda, 16 May 2008 - 10:08 PM.

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#23 Salmon

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Posted 16 May 2008 - 10:10 PM

I think a barrel mod watchumuwhooshiee where you put the darts in the barrel would be better than a clip personally. B)

Jesus, this thread has been necro'd again? Read the post before yours, r-tard.
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#24 Philote

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Posted 17 May 2008 - 07:32 AM

I can't believe you just called someone a r-tard.
on another note 100th post.
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