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Old 07-19-2013, 02:16 PM   #1 (permalink)
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How much is this worth?

Hey there for all those who are reading,

I picked up an old automag off of craigslist from someone since it was unique. The automag is a Minimag with a Smart Parts Magic Box. After doing some research and watching a youtube videos of how to assemble and disassemble the minimag, I took it apart and examined what parts I had. The bolt is a venturi style bolt and the valve has the 8 hold mod. All the internals were still there and the O-rings were in good shape so I just lubed them. The trigger frame is metal and the Minimag has wooden grips. The gas-thru is a ProLine Products expansion chamber. I wasn't able to air up the marker through the duckbill ASA since the ASA doesn't have a pin to push down the tanks pin. However, when I attached the tank through the vertical ASA, the gun held a seal and shot. I was wondering how much would this marker be ideally worth?







Thank-you for reading!
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Old 07-19-2013, 04:32 PM   #2 (permalink)
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Guessing about $100-$120-ish due to the rarity factor of the magic box. Have to find somebody who wants one though. If no magic box enthusiasts are around more in the $90-$100 range.
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Old 07-19-2013, 04:39 PM   #3 (permalink)
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What does the Magic Box [claim to] do?
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Old 07-19-2013, 04:41 PM   #4 (permalink)
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Originally Posted by Murf425 View Post
What does the Magic Box [claim to] do?
its a Smart Parts product that was able to prevent chopping, increase range, fix the middle east, make the economy better, cure cancer, allow cats and dogs to live together in harmony and oh yeah, the most important part, take money out of your pocket with you smiling about it and the product absolutely doing nothing.
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Old 07-19-2013, 06:21 PM   #5 (permalink)
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its a Smart Parts product that was able to prevent chopping, increase range, fix the middle east, make the economy better, cure cancer, allow cats and dogs to live together in harmony and oh yeah, the most important part, take money out of your pocket with you smiling about it and the product absolutely doing nothing.
It works in some of the first few thousand mags that the added bit of volume helps in.
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Old 07-19-2013, 08:23 PM   #6 (permalink)
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late '93 SmartParts came up with a modification to the Automag that they claimed increased range by up to 15 yards. The modification was immediately controversial, with various rumors regarding its function, its performance, its legality in tournament play, and its safety all being questioned.

An initial review on the modification by Paintball Consumer Reports International was not favorable. The jury is still out on the modification's actual level of performance, but most people agree that using a low pressure, high volume mod like this *does* increase the gun's effective range.

The Magic Box mod costs about $150 through SmartParts.

Below are some extensive net.opinions on this modification.

"The black box essentially expands the air chamber capacity in
front of the on/off valve by about 50%. This allows the Mag to
use a greater volume of air at a lower pressure. The result is
that the gun is quieter and shoots farther at lower FPS. I shot
a lot of paint in rapid fire bursts the day I tried it out and
observed no spikes in velocity."
--Bruce (bru@cc.bellcore.com)

"First, let me quell the rumors that it will increase the
velocity in rapid fire beyond what the gun was chrono'ed at in
"single shot" mode. It don't see any way this mod could possibly
increase the velocity above the chrono'ed point unless the gun
sucked liquid. This mod should reduce the chance of sucking
liquid over the stock gun, however. It will reduce the
starvation (and thus velocity/range loss) that the automag
suffers from in rapid fire. In addition, the lower pressure
should result in a "smoother" push, so the accuracy at the same
velocity should increase.
[...]
Now to the "Magic Box". I would call it an expansion air
chamber, with a few unrelated mods thrown in for good measure.
It is a piece of aluminum, approximately 1.25*1.5*.5 inches. It
is hollowed out into two separate sections that *do not*
connect. Each of these sections attaches to the gun through a
standard 1/4" threaded fitting. The expansion chamber section
connects through a newly machined hole into the air chamber, in
line with the existing CO2 fitting in the valve body, which is
the other attachment point. The second section of the "magic
box" contains a replaceable CO2 filter element, held in place by
an O-ring. The CO2 to the gun flows through this part of the
magic box. Again, it does not connect to the expansion chamber.
The left side of the main body is machined to allow the expansion
air chamber to slide in."
--Dave Rotheroe (rotheroe@convex.com)

"[PCRI did evaluate the Magic Box mod]. I've got it in my hot
little hands now. Out of 4 stars, they gave it only 1 star.
They bench mounted the mag at 4 feet above the ground, and put a
piece of wood 20 feet away. This piece of wood had a hole cut in
it that was about 8 inches in diameters. When they shot the gun,
if the ball didn't go through the hole, then they didn't count
it. With each shot, they got the chrono speed, and measured
distance. Here is my "cheap chart":
Black Box on Mag Normal Mag
Speed |---------------------------------------
275-279fps | 130.5 feet | 125.5 feet
280-284fps | 132.2 feet | 130.8 feet
285-289fps | 133.0 feet | 129.0 feet
|---------------------------------------

So overall it increased about 4 feet or so. With the Magic Box
they ended up getting 161 shots out of 200 that fell between
275fps and 288fps (not 289, ok my typing sucks... And the
standard mag shot 175 out of 200 between 275fps and 288 fps. And
I'll use this quote to sum up this section: "The decrease in CO2
pressure hitting the paintball will definitely dimish ball
breakage in the gun, especially in temps below freezing when
paintballs are most fragile. Also, another by-product of the
lower pressure system is a slightly [in italics] slower moving
bolt. In a 10-second burst using the stock Automag we are able
to consistently fire 63 to 69 shots. Using the modified Automag
that number was reduced to 52 to 55." [Feb '94 PCRI page 21]
Conclusion of the Magic Box was that it didn't increase the
velocity, no safety problems were evident, "However, the Box does
not increase the range of the Automag by the advertised 15
yards." And you guys can see that. One Star for it."
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WTF,why would i trade for that?

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"Mar" bro: welcome to the forum, super nice marker - hopeful for your sale.
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Last edited by woouulf; 07-19-2013 at 08:30 PM.
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Old 07-19-2013, 08:30 PM   #7 (permalink)
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Here's an old thread and by the way im 99% sure it was owned and painted by Oldschoolkillz that used to be pretty active on the boards..

Smart Parts "magic box" mag
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WTF,why would i trade for that?

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"Mar" bro: welcome to the forum, super nice marker - hopeful for your sale.
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Last edited by woouulf; 07-19-2013 at 08:48 PM.
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Old 07-20-2013, 10:12 PM   #8 (permalink)
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also, when the magic box was used, co2 was the only gas. so, "smart" people would turn the gun on its side, filling the chamber with a little liquid, have it cook off, giving you that hot shot. so yes, it was effective and gave a little more range, but it was also a cheater mod and with HPA does nothing.

also, Mags, being a dump chamber gun, translate to the bigger the chamber/lower the working pressure, the less efficient the gun. hence the HyperMag, which had a smaller chamber but a higher working pressure had a little better efficiency.
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Old 07-21-2013, 12:49 AM   #9 (permalink)
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Thanks for the responses everyone. So, if I do run this gun, should I use CO2 or HPA? And would I benefit from parting it out or selling it as a whole?
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Old 07-21-2013, 03:25 AM   #10 (permalink)
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while you can run it on CO2, its best with HPA. unless you want to cheat with it and dump liquid co2 in the valve to get a hot shot.

parting there is little value as the magic box won't sell(its literally a box, with nothing in it), the body is drilled for the magic box and the other parts are antiquated. its best as a whole. use it and enjoy.
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