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View Full Version : Kjw M700 External air rig questions



patmann90
11-04-2007, 10:37 PM
I am about to buy a used KJW M700 and was thinking about setting up an external air rig so that the shoots are more consistent. Does anyone know what parts I would need for this setup? Heres what I have seen some guy do ->

http://www.youtube.com/watch?v=7Ee82Fdf0a8

BTW I am waiting for a response from him about his rig.Thanks ahead of time :)


Also is there a way I can add a blow back feature like a classic? Thanks

otang
11-05-2007, 12:11 AM
Wow the GreenGas cloud at the muzzle really gives the shooter away. Any concern about that Patmann? I guess its my lack of experience in this aspect of airsoft that caused curiosity.

Cookerman
11-05-2007, 12:20 AM
Wouldn't the guy in the video have to keep the gas can upside down to use it?

shadow1198
11-05-2007, 12:35 AM
Here's a good Link (http://www.classicairsoft.net/forum1/topic.asp?TOPIC_ID=5703) with parts #'s and links to pretty much everything you need for an external regulated Co2 setup. Honestly, I would forget about green gas and run Co2. I don't know anything specifically about the KJW M700 in particular, however green gas is just propane anyways. It would save you money in the long run, plus there are plenty of various pouches you could fit a Co2 tank in that would be minimally restrictive. On top of that, considering the purpose of a bolt action for airsoft, you likely won't be taking a large number of shots so you could probably get away with a significantly smaller tank like a 7oz that would be easily concealable. The green gas cans are really thin and not durable at all, not to mention due to their height they would be a burden to carry since they wouldn't fit a large variety of pouches. The nice thing about a regulated Co2 setup is you could experiment with the pressure and potentially gain decent fps or range if necessary. Anyways, those were just some thoughts.

Just FYI, if you happen to need any 6mm hose, I still have like 20-23 feet of 6mm nylon hose laying around, and you are more than welcome to take a few feet if need be.

patmann90
11-05-2007, 08:45 AM
Ok I will eventually take you up on that. Thanks for the information.

Also The large amount of gas that is pushed out of the end of the barrel. This can be fixed by attaching a silencer because the gas is transfered away from that one opening. (like a real silencer) and another great thing about the silencers on the gas rifles is that it actually works to silence the rifles.

CALI
11-05-2007, 12:38 PM
Ok I will eventually take you up on that. Thanks for the information.
Also The large amount of gas that is pushed out of the end of the barrel. This can be fixed by attaching a silencer because the gas is transfered away from that one opening. (like a real silencer) and another great thing about the silencers on the gas rifles is that it actually works to silence the rifles.
My opinion...
DONíT DO IT. It took me a lot of weeks to get mine to run but ended up selling it (due to inconsistency from mag pressure). Tuning it to get a consistent velocity is almost impossible unless youíre using only one mag.
I built mine with an HPA rig (Compressed Air) because itís a stable inert gas compared to CO2. There is also no visible gas coming out of the barrel when fired.
Anyways, if you are planning on doing it with one mag just stay with green gas or propane (LPG) that way you have one set pressure from the mag and your hop setting should remain the same. But if you have multiple mags to use and experimenting on external air/gas rig supply...Good Luck! You have to worry about setting internal pressure per mag for a consistent output and hop setting has to change too every time you change mags. Now if you can get these mags set at +/- 5 FPS max. You should be good. But that will require a lot of timeÖ.I can go on and on but my advice is to you is save your money and buy a good Spring Bolt Action Rifle.
I hope you understood what Iím trying to explain here. PM me if you need more clarification and for a step by step instruction on how to build one.
See pictures below for reference:
http://i23.photobucket.com/albums/b399/CALIX/ChloeChili05013.jpg
http://i23.photobucket.com/albums/b399/CALIX/ChloeChili05012.jpg
Good Luck,
CALI

shadow1198
11-05-2007, 05:20 PM
Oh wow, I didn't realize the KJW M700 stores the gas in the mags. That's odd?!

patmann90
11-05-2007, 10:18 PM
Ok I have decided to move back into a Spring rifle. I am looking at a Maruzen APS Type 96 with quit a few upgrades. Here is a pic :love: http://www.airsoftretreat.com/classifieds/data/6/large/PICT0151.JPG


Thanks Shadow and Cali for your help.