Stargate Props and Costumes

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By Naasad Tal
#2582
Hey guys, after posing the question in another thread here I decided to see if it was indeed possible to modify a well d90h to to accept & use a Tokyo Marui med-cap hop-up mag. On the other thread i had a couple folks ask me to post a tutorial of what I did. So here it is (this will be my first tutorial so bare with me & if you have any questions please feel free to ask)

...& away we go...

Parts list:

- Wellfire p90 (either model)
- Papermate ball point pen (or one that has a tapered end)
- 1x1 slanted Lego roof piece
- Scrap piece of 1/8in thick piece of plastic (I recomend ABS as it's much stronger than Sintra)
- Devcon Plastic Welder (make sure to use this stuff in a WELL ventilated area...or it will melt your brain)
- Medium Phillips screwdriver

The first thing I did was to open the gun to make it easier to cut the mag block off the gun (the part that sits back by the magazine catch) & to make a hole for the TM mags feed tube to sit in (did this part by using the tutorial found on this site). Unfortunately, cutting off the mag block leaves the gear box exposed, but once the mods are done the mag covers the open area so you won't see the hole.

-Gun open with mag block cut off & new feed tube hole cut
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In order for the mag to seat on the gun properly you're going to have to cut a small part of the gearbox's frame off (don't worry this doesn't affect function). Even with the piece of the gearbox frame cut off, the gearbox itself sticks up above the hole you made but it isn't very much & all you need to do is grind a portion of the mag's lip down flush (a 1/2in wide section oughta do it).

Still with me? Good, on we go...

With the new feed tube hole cut I had to relocate the barrel slightly forward of it's original postion (seen below)
- Original postion
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- New position
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As you can see, there was now a gap between the end of the barrel & the gearbox (no bueno). I now had to figure out how to fill that gap, after trying a couple diameters of tubing I had laying around the house I decided to try a simple papermate pen...
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I cut a small piece off the bottom end of the pen where it tapers down smaller than the rest of the body of the pen & snipped off the end so I now had a tube that air would travel thru easily
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I then grafted the piece of pen to the gearbox like so...
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*note* in this picture you can see where the small bit of gearbox frame was cut off from the top right-hand corner of the frame.

Now it was time to begin the re-assemble, I wrapped a piece of electrical tape around the seam to reinforce the graft & placed the gearbox back in the gun
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here's a close up of the newly augmented gearbox
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once I goteverything nestled back in place & all the screws tightened down, I had just a couple minor thing left to do. I had to graft on a block that would push the BB release on the TM mag & allow the BBs to feed properly.
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*note* here you can see how I cut the mag block off the gun. I didn't cut all of the block off as you can see, just enough for the mag to seat properly on the gun.

The last thing I did was to bulk up the magazine catch by adding a piece of 1/8in ABS under the original catch, this was done in order to keep the magazine in place & allow for the new block to release the BBs
Image

a quick video to show off the fruits of my labor...
http://youtu.be/ZJi9P-t7C1Q

Well there ya have it, this was actually a surprisingly easy modification once I got the actual process sorted. I hope that this tutorial helps you guys out in modding your Well p90 to give it a more screen accurate look & have it remain functional. Again, if you have any questions on my process & steps please feel free to ask me.
User avatar
By SG Merc
#2583
Nice write up.

Have you noticed any differences in FPS from the modification, or an improvement in feed rate with the new magazine?
By Naasad Tal
#2586
Thanx for the compliment Merc!

I didn't notice any negligible difference in the FPS, in fact in the video, when I start to fire the gun, I was aiming too high & you can see me track down to the target, as I do this you can see see the BBs hit the pad on the back of the chair & indent it as I move downward (there were ricocheing BBs flying all over my kitchen during this btw...Luckily the GF was in the other room, but my daughter was laughin her butt off as she filmed it :lol: )

The only feeding issues came from the magazine itself, the specs on it say it holds 68 BBs, but I was only able to force about 50 in it & the spring got jacked up & stopped feeding the BBs about half way thru the mag (that's why I stopped firing in the video), but once I got the spring unjammed, it fed the rest of the mag beautifully.

I wanna test it again & will probably do that this weekend, but I'm pretty happy with the results. The Well is still a very beginner gun, but at least mine doesn't have the feed issues as it did originally & it's got the fully loaded look from the show :P

Thanx again for the feed back!

Chris
User avatar
By SG Merc
#2587
That's great that the functionality wasn't affected.

I've modded the red dot upper receiver from our replica kit to work on a functioning Well P90, but never a TM magazine. I like it.
By Naasad Tal
#2588
Thanx, I appreciate it. I'll be ordering one of your replica recievers as soon as I can. I'm having a helluva time trying to find one of those ring sight & so far I haven't found anything.

Thanx again for the compliments!

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