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New Style Sm750 Modification

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#1 Blue

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Posted 27 December 2008 - 03:43 AM

Firstly, open up the blaster by popping off the orange thing on top with the tip of a knife or screwdriver, mine popped right off real easy. Next is the purple cap at the back, go around the seams with a knife while pushing up.

Now you should be able to unscrew and open your blaster

Step 1: Saw the barrel at the seam
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Step 2: Put the tip of a small screwdriver in the hole where the barrel post used to be and you should be able to lever out the AR no problem.
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Step 3: Now take your barrel material of choice and wrap some tape around it until it fits snugly in the barrel remains. Put some glue on the inside of the coupler then hammer it on gently.
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Step 4: Put some glue or Goop on the top of the e-tape, to best avoid getting glue inside the tank, and twist the new barrel on. The coupler fits almost perfectly in the hole in the front of the gun, but I added a layer of e-tape just to make it more stable. Also, Glue the trigger spring to the trigger and to the white piece. I didn't think it would do much, put it seems like it adds quite a bit of power
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Step 5: Reassembly. Wipe off all the grayish original lubricant and put in a few drops of mineral oil. Now put the back together and put some hot glue on the end cap and re-glue it on the end of the pump, just a few beads on the edge in case you have to open your blaster again, which you probably will. You can also plug your pump if you want, I did. If you do, use a max of 4 pumps
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Finished Product:
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Ranges: Very good.

Edited by Blue, 28 February 2010 - 01:30 PM.

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#2 Foamfoot

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Posted 27 December 2008 - 04:00 AM

Generally, 750's can get better ranges than 50ft. Did you use painters tape? Use E-Tape and plumbers goop for an effective seal.
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Damn it Foamfoot. Why is it that you kill every good topic with a retarded response a few days late.


#3 Blue

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Posted 27 December 2008 - 04:13 AM

Generally, 750's can get better ranges than 50ft. Did you use painters tape? Use E-Tape and plumbers goop for an effective seal.


Took your advice, much better now.

Edited by Blue, 28 December 2008 - 02:23 AM.

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#4 ChiliPepperFender

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Posted 27 December 2008 - 04:21 AM

Didn't really need a thread for this, it's been done many times, but good mod.
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#5 Blue

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Posted 27 December 2008 - 04:50 AM

Didn't really need a thread for this, it's been done many times, but good mod.


Fixed my first post.

Edited by Blue, 28 December 2008 - 02:24 AM.

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#6 Norther of Heaven

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Posted 27 December 2008 - 04:19 PM

... and as for the goop, I didn't want this to be permanent since no one uses Tap Acrylic, and I might want to sell this some day. Keep in mind the pump isn't plugged, and that I'm guestimating ranges.

You do realize that Goop is really easy to get off, right? I have no idea why so many people whine about how difficult that is.
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#7 Blue

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Posted 27 December 2008 - 04:27 PM

... and as for the goop, I didn't want this to be permanent since no one uses Tap Acrylic, and I might want to sell this some day. Keep in mind the pump isn't plugged, and that I'm guestimating ranges.

You do realize that Goop is really easy to get off, right? I have no idea why so many people whine about how difficult that is.


The tape is air tight. I ramrodded a streamline and I'd say it cleared 100ft at a 45 degree angle.

Edited by Blue, 27 December 2008 - 09:45 PM.

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#8 Blue

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Posted 27 December 2008 - 09:40 PM

Sorry for the double post, but I updated with something original that I have never seen anyone do. Hopefully now it will be added to the directory.
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