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Longshot Internal Shotgun Mod

Now with writeup

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#1 watkins

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Posted 17 July 2007 - 08:35 PM

BACKGROUND:
I, as well as so many others, have loved Slugís shotgun fore grip kit since they first came out. I'm sure just as many have found them to distract from the aesthetics of the gun, even though the most recent incarnation is small and unobtrusive. Telekinetic recently posted a concept part for an internal version of the grip. Having some power tools and no money to buy the grip, I set to bring the idea of an internal shotgun grip to reality.

MODIFICATIONS:
First thing to do is to remove several parts of the Longshot shell. The first of which is the detail that runs under the gun and sticks out through the bipod legs when theyíre folded, just like in CSís mod. I reattached part of that for cosmetic reasons. The lower of the two rails running the length of the shell needs to be cut or shaved about 1/16 inch lower. It should be the same level as the top rail where it passes the bolt and clip. Additionally, any walls perpendicular to the rails need to be trimmed to the same height, up to and including the wall attached to the rearmost of the three sets of openings that show the barrel when the gun is closed. There are two walls on the right and three on the left that need this treatment.

With all that removed, its time to cut a slit in the shell from the center of the notch that locks the bipod back to the rear of the raised section of the detail mentioned earlier. Depending on the grip material that will be used, the mounts for the bipod need to be cut away as well.
Posted Image
Obviously the rails and bipod mounts are not pictured, but it is simple enough to figure out. I can take a picture if anyone really wants or needs one.

Once the shell has been cut, some of the internal mechanisms need to be trimmed as well. On the right side of the bolt sled is a V shaped extension in the middle and a small nub at the front. Both of these need to come out.
Posted Image

Unless a breach mod has been done that negates the use of the dart tooth, it is next on the chopping block. Once again, there is a protrusion on the right side which needs to be cut flush with the rest of the larger surface. About the same amount of material needs to be removed from the left side.
Posted Image

FABRICATION:
I used a length of aluminum C channel because thatís what I had, but almost any 1/16 inch thick strip of metal can be used. Start by cutting two pieces with the dimensions shown below, all in inches.
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Fold a thin but sturdy piece of metal 2 inches by a bit over 4 inches in half and hammer the crease flat. Sandwich this piece crease up between the fronts of the two sides that were just cut. Line up the edges and drill a few holes through all three pieces and tightly screw or bolt them together.

Right behind the sandwich, bend the two sides out at a 45 degree angle. 5/8 inch further along the sides, bend them back in to run parallel again. Line the back of the left side up with the back of the bolt sled and drill holes through each of the metal sides to match the hole in the plastic. On the right side, cut a notch to match that on the bolt sled. Finally, bend out the two wings of metal at the front perpendicular to the sides, then gently curve them downward.
Posted Image

Put that aside to work on the grip itself. The grip is the most customizable part of the modification, so do with it what you will, but I made mine with a piece of two inch PVC. I cut a 1 1/2 inch strip out of a 4 3/4 inch long section of pipe. I cut one side to match the angle of the Longshot shell just in front of the clip opening.
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FINAL ASSEMBLY:
At this point in the project, all of the pieces are ready to be put together. For the most part the internals go in the same way, the new cocking extension just needs to be weaved through everything.
Posted Image

With the main shell closed, the grip can be attached. To make sure the gun can be fully cocked once it is attached, this step needs to be done while cocked. Position the grip over the protruding metal wings and butt it against the shell. Drill holes through the grip and into the wings and screw or bolt them together. The stock cocking handle can e replaced by some form of rod for a sleeker look, but I kept the original in case I felt like cocking it that way for whatever reason.
Posted Image

FINAL THOUGHTS:
This modification serves the same purpose as every other shotgun mod and really has no advantages other than retaining the clean look of the gun. Much credit goes to those who have created their own grips in the past, especially CS for making his kits readily available and telekinetic for giving me the inspiration to complete this project.

If for whatever reason anyone has trouble doing this for their self, feel free to pm me. Also, make sure that throughout the process you check and recheck the fit of the new parts and make any changes to keep the gun operating smoothly.

Edited by watkins, 30 July 2007 - 11:41 PM.

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#2 The Crackerjack Man

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Posted 17 July 2007 - 08:38 PM

Very clean. Its pretty much CS's pump but internal instead of it all external and its two pieces.
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"Wow, you realy screwed that guy over"

#3 Spectre666

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Posted 17 July 2007 - 09:18 PM

Very clean and very nice mod. I never would've thought of that. Just one thing, next time could you use slightly smaller pictures? Thanks. Also, post pictures of the final product when you do the paintjob.
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#4 Forsaken angel24

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Posted 18 July 2007 - 12:38 AM

I am sure this has potential to be a cool mod. To be honest I am not going to even try to read this until the pics are resized. I refuse to side scroll to read text and view the entire photo each time. It is very irritating. Resize the pics and I will read this and if it is a good write up even add it to the directory.
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I don't get my kicks out of you,
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#5 Thom

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Posted 18 July 2007 - 01:48 AM

Wow! This is amazing; I never even thought this might be possible. Excellent work.
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#6 six-five-two

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Posted 18 July 2007 - 01:58 AM

Amazing! And very clean aswell. I agree with Forsaken Angel, resize the pictures! If you don't know how for some reason I made a tutorial how to:
http://nerfhaven.com...?showtopic=8852
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#7 Assulted by Longshot

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Posted 18 July 2007 - 07:52 AM

Sweet as mod!

This is the best mod for the Longshot I've seen. A definite addition to my gun.

A few questions;

- How much of the inside wall of each side did you file down so that the metal bars could slide without getting caught?
- Can you please take some more photos of the dart tooth.
- What's a latter?
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#8 watkins

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Posted 18 July 2007 - 08:54 AM

Sorry about the pictures guys. My resolution is so high that it isnt at all annoying for me. I always forget some people have smaller resolutions. Ill get right on it.

@Assulted:
Originally I didnt sand down anything beyond what I posted, but during my fine-tuning after the fact I sliced about 1/16 of an inch of of the bottom of the two horizontal rails running right above the slot for the stock cocking handle. I havent put it back together yet, but I think it will make it smoother.
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#9 telekinetic

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Posted 18 July 2007 - 12:40 PM

Do I get partial credit for the idea, or had someone else posted about it recently? Glad someone had the time to actually try it!

Edited by telekinetic, 18 July 2007 - 12:45 PM.

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Frylock is telekinetic, right?

#10 watkins

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Posted 18 July 2007 - 03:00 PM

Do I get partial credit for the idea, or had someone else posted about it recently? Glad someone had the time to actually try it!

Yup. Points to you for inspiring me.
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#11 Forsaken angel24

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Posted 18 July 2007 - 11:30 PM

Sweet mod, I would love to see a video of it in action once it is complete.
I am unsure at the moment as to whether or not this is a full write up though.
This thing has potential to be the cleanest non-bulky looking shotgun mod for this gun.
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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.

#12 Prometheus

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Posted 19 July 2007 - 06:24 AM

Nice mod. I think Frost Vectron was talking about something like this a few days ago. Good to see someone actually go out and do it.
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#13 watkins

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Posted 19 July 2007 - 10:32 AM

Sweet mod, I would love to see a video of it in action once it is complete.
I am unsure at the moment as to whether or not this is a full write up though.
This thing has potential to be the cleanest non-bulky looking shotgun mod for this gun.

I wasnt sure of whether it can be called a write up as of now either. For me it was mostly a proof of concept. Next week when I get home from a trip with my friends Ill get more detail and take some measurements. Expect a full write up and potentially a video Tuesday-ish.
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#14 watkins

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Posted 30 July 2007 - 10:54 PM

*bump*
Theres a full writeup instead of the quick one now. Sorry it took so long.
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#15 AJAQ

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Posted 31 July 2007 - 11:13 AM

Go figure. Just when I complete every different mod for the longshot, another comes out.

Well, I don't think I will be doing this one until next year.

But I do have my longshot done! 120'.

Nicely done.

Edited by AJAQ, 31 July 2007 - 11:13 AM.

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~AJAQ~

#16 Assulted by Longshot

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Posted 01 August 2007 - 02:06 AM

Thanks for re-doing this write up.
Awesome mod once again!

What will happen to the rest of the gun if the nub and V on the bolt slide are removed?
I know the nub is just to extend the slide so the the dart tooth is forced downwards? Will it still work as well without the full nub? does the slide sometimes miss the dart tooth?

I am about to start doing this mod and I will post my pictures. I am using acrylic sheeting as the grip because I can mould it easily. I am leaving space for clips to hold a '2 AA's Mini MagLite' like what some modders were trying to do with the 'Longshot Sopmod'. I am also not cutting away the bi-pod holders and pipe like things near the clip. See how it goes, eh? :wacko:
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#17 watkins

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Posted 01 August 2007 - 09:22 AM

Glad you like it enough to try it. The parts that are removed dont really ever matter with or without the new parts. the way everything fits however keeps things lined up in such a way that no functionality is lost.

Good luck with yours, I cant wait to see it.
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