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Pump Shotgun Pump-action/clip Mod

for the ERTL FS-1010

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#1 ambushbug

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Posted 25 September 2006 - 04:13 AM

A while back, I posted some internal pics of this
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off-brand ball gun (aka the ERTL FS-1010 Pump Shotgun) I bought at a local Bass Pro shop. Given the internals, I was pretty optimistic of its potential. I brassed it and was pretty happy with its performance singled
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Its got great range (think Max Shot) and its airseal is so tight that darts can be muzzle loaded in the 8" brass barrel (9/16") and get sucked the rear of the barrel when cocked. This makes for a good RoF with no breeching necessary.

(NOTE* for any mod using a 9/16" barrel, be sure to jam some PETG or brass of smaller inner diameter in the back of the barrel to prevent darts from getting sucked right into the plunger.)


But I had been thinking of ways to turn this thing into an even more formidable weapon in terms of ammo load and RoF. I was trying to think of a way to clip-mod this in a way similar to my version of Piss Bacon's BBB mod (aka the Bacon Bow). Of course the problem was that the shotgun, like most Nerf blasters, lacked the BBB's unique cocking mechanism that allows the barrel/breech system to fire darts at a position closest to the plunger. I ended up buying another ERTL shotgun recently and went to work.

Well, my solution was to split the handle of the existing shotgun pump into two sections (front and rear). The front handle still functions to cock the plunger but the rear can now move independently to work a breech, sliding the brass (9/16") barrel backwards over the dart. Not sure what to call this type of mechanism - kinda like pump and bolt action at the same time.

I'll do my best to explain what I did but I'm afraid I didn't have a camera available during some of the crucial early steps. Hopefully though, the pics will give you an idea and you can fill in the blanks. I don't talk about replacing the existing barrel and installing the new barrel/breech as Forsaken Angel already provided a good write up for the the former and the latter was performed by a procedure that I used when making my Bacon Bow.

The "arm" used to link the rear handle to the barrel/breech consisted of some spare black plastic tubing (just lying around) and a broken aluminum tent stake
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The blunt end of the stake was jammed very tightly into some PETG do facilitate gluing to the inside of the rear handle. The pointy tip of the tent stake was eventually jammed into the hollow black plastic tube and secured with some e-tape and a tightened hose clamp.

The handles were hacked from the original pump - here are the handles after the cutting was already done
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Note the position of the tent stake.

To accomodate the backwards sliding (closed breech) arm (with hose clamp), I had to hack/sand out some space in the bottom of the front handle
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To install the stake, I screwed the rear handle back together and once I got everything in position, I used some krazy glue to attach it and a pile of hotglue around it to support the stake. But be careful not to add too much glue - there still need to be space to accommodate a screw when the rear handle is slid forward (open breech)
Posted Image. The black plastic arm extension connected to the 9/16"barrel via a series of hose clamps and a CT clamp
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The new breech (19/32" brass) was mounted to the plunger with some e-tape and a piece of PVC coupler (gray thing).
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more in a sec (image limits).....

I was afraid the connection was weak so I took some old (green) plastic tubing and cut out a ring to add support to the junction between the PVC coupler and the (brown) plunger tube
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Then I wrapped the ring in black e-tape
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To allow it to accommodate my clips, I added a clip guide cut from some scrap transparent orange PETG
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I glued it to the the PVC coupler opposite from the breech opening
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I also secured this connection with a (white) ziptie
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My clip slides into position and is held by the guide. Since the clip is spring fed, I keep it in a semi-sideways position
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But since the breech can still be rotated, the clip can also be mounted vertically (above) - so, in theory, it can also accommodate gravity-fed clips
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I'm very happy with the result. I just need to make more clips or ones of greater capacity. I am currently working on a 25-round drum-magazine. I'll write it up if it works. If it does, I might not want to buy that Longshot anymore.

Sorry - no official ranges (I live in a tiny apartment in the downtown core). And I didn't bother to do anything with the plunger/internals (Forsaken Angel posted a clever way of maximizing the air delivery) as when I war (seldom), it is usually indoors where anything beyond 60 feet is a bit of overkill - but this thing is STILL a welt-bringer!


In case you don't get how it works here's some (crappy) video of:
the pump/breech mechanism
installing the clip and firing (that carboard target/trap is point blank)
single breech-loading (e.g. if I'm out of clips)


I hope you found this stimulating! Comments?

Edited by ambushbug, 04 August 2007 - 12:01 AM.

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#2 CaptainSlug

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Posted 25 September 2006 - 05:34 AM

Forsaken_angel24 fiddled with one of these as well and got really nice range averages out of it.
http://nerfhaven.com...?showtopic=6750

Edited by CaptainSlug, 27 September 2006 - 05:01 AM.

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#3 six-five-two

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Posted 25 September 2006 - 01:03 PM

It is like Forsaken Angels mod but with a clip. Nice mod, I think I may get one of these but there are no bass pro shops around. How much are they?

EDIT: $24.95

Edited by six-five-two, 25 September 2006 - 01:08 PM.

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#4 ambushbug

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Posted 25 September 2006 - 03:36 PM

[quote name='six-five-two' date='Sep 25 2006, 10:03 AM' post='90457']
It is like Forsaken Angels mod but with a clip. Nice mod, I think I may get one of these but there are no bass pro shops around. How much are they?


Actually, I think there's a little more nuance to it than merely adding a clip. The clip is the easy part - its getting the breech to work simultaneously with the pump that was the point of this mod (that may not have been apparent in the pics or the crappy video). If this is unclear, let me know and I'll try to get some better video.

And I apologize for not including some links in the writeup - I originally intended to "edit" and add links for a bunch of previous mods I referenced:
- my old write up of the Ertl FS-1010 internals
- the original Bacon Bow mod that inspired this
- Forsaken Angel's plunger modifications
- the assemby of my own peculiar clip (originally designed for my version of the Bacon Bow)

however, I had difficulties in getting the edits accepted (the write up was in two separate messages at first but the editor function seemed to consolidate the two, putting the 'edited' version over the image limit). Long story short, sorry for this double-post but it has neccesary reference information.


EDIT:

six-five-two: the darts in the videos/pics are my own custom ammo made from Buzz Bee stock darts. They're cut down to 1.5" and tipped with a small "puck" of (pre-cut, cold) hotglue and a craft bead, sealed with (melted) hotglue. They're experimental ammo right now (I call 'em 'Cyclops' darts - b/c to me, the tip looks like a single eye). Better darts than my other stefans (but I AM terrible at making regular stefans).

General Cole: the 'travel' on the breech (assuming I understand correctly) is a little under 3" (7.2 cm).

Edited by ambushbug, 25 September 2006 - 06:46 PM.

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#5 six-five-two

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Posted 25 September 2006 - 03:45 PM

What darts are you using?
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#6 Retiate

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Posted 25 September 2006 - 05:07 PM

Nice mod. I did Forsaken Angel's mod to this gun. If the clip doesn't sacrafice too much range I might just have to do this. Though I have a BBB I'm working on doing Forsaken Angel's mod to.
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#7 General Cole

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Posted 25 September 2006 - 05:37 PM

What is the travel on that breech?
We should stop calling out/making fun of/pissing GC off. He's actually contributed and is available for trade. He's a better than average member no doubt. Got your back Cole.
-Nerfer34

You know what... I know it's kinda late... but Props Cole.
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#8 Forsaken angel24

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Posted 25 September 2006 - 07:19 PM

Nice mod. I did Forsaken Angel's mod to this gun. If the clip doesn't sacrafice too much range I might just have to do this. Though I have a BBB I'm working on doing Forsaken Angel's mod to.


Nerf should be paying me for the business I get them.

Ambush bug you son of a bitch. B)
I was talking about doing something like this a while back but got distracted with other guns, life, women, work.
I like your mod functionally but I think it is a little hideous.
Now I am inspired to make yet another pumpshotgun mod with clip. Damn you for making me do this.
When I am done with my 3 current projects I will start on it. The LS will have to wait.
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#9 ambushbug

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Posted 25 September 2006 - 09:56 PM

[/quote]

Ambush bug you son of a bitch. :wacko:
I was talking about doing something like this a while back but got distracted with other guns, life, women, work.
I like your mod functionally but I think it is a little hideous.
Now I am inspired to make yet another pumpshotgun mod with clip. Damn you for making me do this.
When I am done with my 3 current projects I will start on it. The LS will have to wait.
[/quote]


Yeah, it could be more fancy (i.e. the thing was made from alot of scrap material in about three hours - but is structurally sound considering I work without a dremel or epoxy) but I had to get the little bugger done ASAP. Not for use or anything, I'm just obsessive compulsive when I'm curious to try something out. So, for the sake of concentrating on writing up my goddamn thesis, salvaging my career (and maybe my marriage) I'm okay with the gun looking like ass.... :unsure:

Glad to be spreading the disease of distraction..... and as always, I look forward to seeing what unholy device you can conjure up.
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