Id like to clarify this is an article i found a while back, this is not mine, nor the businesses' interview (Id love a chance like that). There may be improper translations here and there, but enough is intact to understand how truly talented this man was. The following covers the design, manufacturing, and sales of the Fujimi M712 BV pistol Link to original interviewer and article
Unfortunately, it was raining on January 24th, the day of the interview . When we arrived at the coffee shop where we were supposed to meet about 15 minutes before the scheduled time, Mr. Kojima arrived almost at the same time. A simple calculation from the year the Fujimi Moselle was released should make him much older than me, but I was surprised to find someone who was unexpectedly youthful.
Industrial designer Hitoshi Kojima (right) is currently 41 years old. After working at Nissan Motor Co., Ltd. and R&M, he has designed parts of cars for motor shows with MIM Design, which is particularly famous in the car world, and has also designed differential gears for motorcycles and cars. It is said that the design request was made from the Fujimi model due to personal connections with the president of the company, but...
Platoon leader (hereafter referred to as “small”) First of all, I would like to ask you a question. How did you come to the design request?
Mr. Kojima (hereafter referred to as "child") From the beginning, we talked about wanting to make a Mauser M712, and moreover, we wanted to make it semi-automatic/full-automatic. I myself have loved the Mauser M712 from the beginning. Then, there was another person named Mr. Ogawa who did the basic design of the unit.
In small school, there was a story called 712, and a unit was created from there...
No , there was a unit even before that. At that time, there was no fixed barrel. I wanted to make a fully automatic unit with a fixed barrel, so I was making it like a job. (Platoon leader note: The company even made a prototype of a full-auto air gun with a bullet sensor and set for amusement facilities)
Anything you used as a small reference?
Mr. K, who is in charge of Komakuro , brought Marushin's plastic model gun and asked me to use it as a base. So I made a drawing. (Platoon leader note: This person in charge and the department in charge of air guns at that time do not exist in the current Fujimi model)
Small (712) is thin... isn't it?
It seems that no other manufacturer could have put a unit inside this .
It was a little difficult, wasn't it?
Baby , you know, there's the original unit, and it took me about a week to put it together with the semi-automatic mechanism and lay it out. So, let's get into the prototype.
Small (while looking at the drawing of the chamber), it's very different from the mass-produced machine, isn't it?
The baby mass production machine is a casting, isn't it? Because the prototype is made by "shaving". For mass-produced castings, Mr. Fujimi re-draws the drawings.
Is it not touched when it is a small improved type?
I don't have many children . I think that (for the improved model) Fujimi made the cylinder a casting to reduce costs. Also, you glued the valves together, didn't you? Well, there are many people who want to increase the flow rate by removing it and enlarging the hole. But if you do that, the rate of fire will increase and you won't be able to cut the cicada. So, when I removed the valve that was sent as a complaint, everyone said that the diameter was enlarged.
Small , that is... like an accusation (bitter smile). Even if the pressure is low, the bullet will come out. Semi doesn't work after all.
I hope it's a stable pressure. It's no good if it changes. I can't help it, so I made it according to 3.5 (atmospheric pressure). Personally, I close the diameter here (where the O-ring of the chamber fits) by one comma, so I can make it a little more pressure. But if you pack it too much, it will stop firing immediately.
Small and simple, but very subtle. Do you have any tips for making cicadas cut better?
After all , the most important thing is not to apply oil to the O-ring. And don't put too much pressure on it. As I said earlier, don't oversize the valve.
(Initial type "unit". "Kai" has differences such as the chamber surroundings, the material of the "engine section cylinder", and the shape of the "semi-full switching bar". The disassembled initial type.
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It's small (laughs). Did the prototype work well?
Child That's right. Because when it comes to mass production, there will always be variations. (The chamber) is made by shaving, which eliminates the backlash of the barrel. (For mass-produced machines) wrap it with tape.
Small ah, it was rolled.
In mass production, the part where the barrel of the chamber block enters is tapered (as a "draft angle" to make it easier to remove the molded casting from the mold), so the position of the barrel cannot be determined.
How long does the small taper take?
I wonder how much the child draft slope is. Maybe I should leave it to the foundry.
Doesn't it appear in the small drawing?
baby yeah...
According to people who have been messing with it, there are individuals with a very poor accuracy rate for a fixed barrel.
Child, that's right, I knew it.
The child prototype was cast from a wooden mold... The resin was like a cream color, but the person in charge was very particular about it, so the product was extremely beautiful. The only thing different from the real thing is the dimensions here (the bolt that can be seen from the ejection port). I just couldn't get the unit. The cost of the magazine has been reduced too much (unfortunately). I haven't been able to test this over the long term.
The slightly improved version had an O-ring in addition to the cup-shaped packing. So, if you compare them, the dimensions (diameter of the bullet feeder) are also different. It's getting narrower, isn't it?
It seems that the shape of the child 's middle and other things were thought out by Mr. Okuyama. At first, it was designed to prevent bullets from entering, but it seems that they have successfully found a way to make it so that air does not leak by gluing. The person in charge was excellent, so it seems that they were particular about making it.
It must have been difficult because the markings on the small German guns were too loud.
We haven't touched that area at all . I was a kind person. Did you get "marks" properly?
Oh , it's a tool mark.
Kogi wooden stocks and grips...
Small Ah, normally, new entrants don't make that much.
When I was designing the child , the person in charge would definitely provide (stock), so please add this (rug). (Grip) Only this position (screw position) is different from a real gun. In terms of the position of the gas chamber, in any case, it's a shape that doesn't have a real gun attached.
Overall view of L85 Prototype semi
-automatic unit mounted on SS-9
Bonus: The model name written on the unit drawing of the model planned for development at that time??? 
In addition , what is the design of the toy gun?
After this , did Fujimi make a prototype of this (with the drawing of L85)? I think I took it to a toy gun show or something. (The platoon leader's note: The appearance of the exhibition at the ``All Japan Model Hobby Show'' in October 1989 was published in the ``Arms Magazine'' in the 1990.1 issue.) After that, Mr. Fujimi withdrew and disappeared . It happened. The unit was based on this (712).
I was thinking about making a semi-automatic (version) unit of this (712 unit) and selling it.
did you make it small ?
I wonder if it took about 100,000 children (prototype). I put it on the SS-9... but I ended up making one for myself. There was only a semi-automatic impact valve, right? Instead, I wanted something with more power. The basics are the same as this guy (712 unit).
Was there also a place where (the operating condition) depended on the bullet extraction resistance in the small ?
There was a balance between the air pressure and the spring, and there were times when it broke and sometimes it didn't . I made several types (of springs) and tried various combinations.
I have to do it with a small demonstration.
Child so. So this (712) is also a double (piston) spring. So, if you put it in the right and left winding, it will not get entangled.
Komata : Do you want to do this kind of work (airgun)?
If I can do this much, I want to do it (laughs )
By the way , what are your cancer hobbies?
I don't have many these days, but when I was doing this, I bought a lot.
does it look small ?
After Kodenki came out, I stopped doing it.
What kind of small guns do you have these days?
Child Western Arms' Beretta, isn't it? I also bought a Marui Desert Eagle. Beretta buys metal parts. So, I made it all metal, but I thought it was a little bad, so I bought plastic again.
By the way, after a while after this (712) came out, Maruzen released the M93R (BV type semi-full).
Oh baby , I bought it. But it wasn't that interesting, so I gave it away right away. This guy (712) leaks a lot of gas, but Marui's guy (Gas BLK DE) has good fuel efficiency.
Is there anything that you personally would like to model up for something like this?
As a child , it was actually my favorite gun, this (712). And I would love the people around me. So, I think we came up with something good.
I was happy with the rifle It's not often that only people who like it get together and make it.
I still have three children (Fujimi Moselle). The one that was a prototype, the one that the president bought at the company and gave it to the employees... I guess I bought the new model myself at the store.
What air gun do you want the most as a child ?
Hmmm ... If I had to say it, it would be like Wilson blowing back in WA. If you insist. I like to shoot pass-by with semi-auto. You bought three SS (SS-9). You can modify it so that you can use bullets with Asahi's feathers. But it didn't work at all. I didn't buy the gun (M40A1).
Despite its short lifespan, the charm of this toy gun that continues to be loved today is, in many ways, the "power" given to it by the "optimal and best staff". did. In any case, the Fujimi model "Mauser M712" is probably one of the few toy guns that has "something" other than just the operation as a tool and the details as a model.