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G&G K98 with external Co2 mod.

 
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Johann Hansen
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PostPosted: Fri Aug 03, 2012 3:22 pm    Post subject: G&G K98 with external Co2 mod. Reply with quote

Just a quick review, I didn't want to clutter up the other thread with this.
I will get more up later.

This is the "V2" with stronger sears and 2 magazines in the package.
1 Magazine is rated for ~450 FPS and the other is ~350 supposedly.

Build quality
The wood is decent, stain is meh. Looks a bit fake.
Metal parts are pretty good, some better then others. What should be metal, is metal. No curve balls thrown here.

The magazines are robust, nice and strong.

The hopup is great, very easy and sensitive dial.

The safety works just as the real deal, a nice little touch.


Markings:






And on the butt plate it says:
"Taiwan
G&G "
The sling is also marked with "G&G" on the metal keeper. It's made of cheap leather. It works but I personally suggest getting a repro.

The big downfall with this rifle, is the 8G Co2 bulbs. These are a bit expensive and add up. Thankfully G&G has released Propane/Green gas mags not too long ago, they should be hitting shelves soon.

External Co2 Mod.
The idea behind this is far more stable and consistent shooting. Little to no fluctuating in pressure. Instead of 8G of Co2, I have 9Oz/12Oz/20Oz/etc..
Once I obtain a regulator, I can adjust the PSI thus adjusting the FPS to accommodate the day.
Big bonus in my books.

The downfall is you are attached to a hose and lugging a big Co2 can just like Tikers MG.

It's pretty straightforward.
Drill an tap a male plug into the Co2 bulb. (Sorry for the blurry pics)


Drill out space in the bottom of the magazine so it may poke out.

Insert the Co2 bulb, screw on the Male quick attach.

Plug away and go.


All I need now is the one mag, and lots of the ammo clippy things.

So far I have a leak or two I need to square away, but she works. I obtained all my parts from Flagswipe Paintball. A great shop in London who helped me out greatly in taking on this project.
Big thanks to them (They also stock some quality Airsoft products if you're ever looking and in town, hit them up)

Initial field report.
It was fairly humid out today, gun got pretty wet. Because of such, the hopup was not working 100% correctly. For the most part, the range was super.
Using the Co2 bulbs is a huge downfall. They tend to run dry quick, and the guns performance goes quick.
For the first ~30 shots, everything was awesome. Nice range, good punch.
Alright for the next ~20, progressively getting worse with each shot.
Horrible crap for the next ~5.

Now you can understand why I will be running external Co2 on a larger tank.

All in all - Great gun, horrible gas system due to the nature of a small Co2 bulb.
Strongly suggest ditching the Co2 mags and picking up the Propane ones, unless you mod the Co2.

Second Field report using External Co2
She shoots far!!
About ~420-430 with no regulator and .25.
Very consistent and very far. No measured out distance, I would estimate around the ~200+ feet mark.
Pretty accurate too, even for .25's.

I have gone through about ~500 rounds, showing no signs of ware.
Paint is coming off, whoop-de-doo. The sears look good.
Nothing looks like it will need replacing any time soon.


Last edited by Johann Hansen on Fri Aug 17, 2012 9:33 pm; edited 10 times in total
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COL.TIKER



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PostPosted: Fri Aug 03, 2012 6:05 pm    Post subject: Reply with quote

how much was it?
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Johann Hansen
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PostPosted: Fri Aug 03, 2012 10:56 pm    Post subject: Reply with quote

510 bones used.

I am working on modding an 8G Co2 cartridge for external Co2, much like your MG.

Need to square away a few leaks in the setup and then she is golden.


Last edited by Johann Hansen on Sat Aug 04, 2012 8:40 am; edited 1 time in total
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BootYourFace
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PostPosted: Sat Aug 04, 2012 2:45 am    Post subject: Reply with quote

Awesome stuff!

Last edited by BootYourFace on Sat Aug 04, 2012 11:29 am; edited 1 time in total
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Johann Hansen
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PostPosted: Sat Aug 04, 2012 8:38 am    Post subject: Reply with quote

External Co2 mod pics are up. The leaks I am having are mostly from my hose, going to get it checked out next week at Flagswipe. Nothing major and an easy fix if you got the right tools (Which I don't, d'oh)
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Johann Hansen
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PostPosted: Fri Aug 17, 2012 9:35 pm    Post subject: Reply with quote

Second field report is up.

No signs of wear, all is looking well after ~500 rounds.
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COL.TIKER



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PostPosted: Sun Aug 19, 2012 1:04 pm    Post subject: Reply with quote

how many rounds can you fire off with each tank?

And why CO2? I think HPA would be much better.
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shiftsup
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PostPosted: Sun Aug 19, 2012 1:29 pm    Post subject: Reply with quote

John, nice DIY.

How do you like handlimg a rifle with a hose attached to it. Would you use this CO2 setup as a primary at a game more than once?
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Johann Hansen
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PostPosted: Sun Aug 19, 2012 3:18 pm    Post subject: Reply with quote

Co2 only because a friend had a tank he was not using, luck really. I will switch to HPA eventually though, down the road for sure.

The round count per tank I imagine is high.
Considering I've blown through ~500 rounds and a ton of leaking, with a lot still left in it, I'm sure I will get a good nice round count. (~2,000 at least? Best guess.)

Don't mind the hose too much, it's a learning experience. I keep the Co2 can in my A-Frame bag, fits just right.

This is now my primary setup for this rifle for sure. I cannot see going back or switching to the Propane mags.
No fussing about amount of gas left in this mag or that mag, just lug one giant supply.
As well as the shot-to-shot consistency being very good, I really do not see myself switching back.

I'm even tempted to mod my Luger up! Hah.

Thanks guys.
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PostPosted: Sat Sep 08, 2012 8:41 pm    Post subject: Reply with quote

Any idea if the G&G CO2 mags fit the tanaka K98?
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PostPosted: Sat Sep 08, 2012 9:25 pm    Post subject: Reply with quote

They don't.
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PostPosted: Sun Sep 09, 2012 1:01 pm    Post subject: Reply with quote

Damn, too bad.
So is there anything interchangeable between this and the tanaka K98?

Does the G&G use a regular AEG barrel? What length?
Does the tanaka use a regular AEG barrel? What length?

What hopup rubbers do these guns use? Regular ones?
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Johann Hansen
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PostPosted: Sun Sep 09, 2012 5:09 pm    Post subject: Reply with quote

Well, the hopup unit is rumored to be glued solid on the G&G. By the looks of it, I can see that and don't see it coming apart willingly.
Rumor is G&G did this to ensure a 100% seal, and boy did they ever...

They use different rubbers, VSR-10/Marui pistol style AFAIK. Long barrels, no idea on exact length.
Out of the box they both work amazing though, no need to replace anything any time soon, unless you happen to get a lemon.
Try it out first and see, don't fix what isn't broken.
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PostPosted: Sun Sep 09, 2012 9:55 pm    Post subject: Reply with quote

Forever_Kaos wrote:
Well, the hopup unit is rumored to be glued solid on the G&G. By the looks of it, I can see that and don't see it coming apart willingly.
Rumor is G&G did this to ensure a 100% seal, and boy did they ever...

They use different rubbers, VSR-10/Marui pistol style AFAIK. Long barrels, no idea on exact length.
Out of the box they both work amazing though, no need to replace anything any time soon, unless you happen to get a lemon.
Try it out first and see, don't fix what isn't broken.


True, but being bolt action, small number of rounds per mag, and the fact that the yanks are coming with a whole bunch of thompsons, I want mine to shoot as best as possible.
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