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Km4 Ris Gearbox Availability


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#1 Sloth

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Posted 29 April 2011 - 03:50 PM

Any idea on when the 2gx complete gearbox will be in stock?
http://store.kwausa....4a1gearbox.aspx

And the M130 Spring?
http://store.kwausa....m130spring.aspx


On the spring, does anyone have a recommendation on what to use if the KWA is unavailable? I've got some springs, but they're waaaay too long. Considering cutting one of them down, but I'm not sure if that's wise.

I've got a stock KM4 RIS. M120 stock spring that shot 390ish out of the box. (Now down to 342, due to accidentally leaving it compressed on two separate occasions) I want a spring that gets me just over 400 FPS, so that I can hopefully get it settled very close to 400 exactly. I'm pretty sure the KWA M130 is the best option for this, but it's not in stock, and I'd really like to get one in the gun so I'm not being outranged with my 340 FPS.

#2 Sloth

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Posted 29 April 2011 - 04:35 PM

I was able to find the M130 KWA spring elsewhere. Still very interested in the gearbox query, though.

#3 gcw360

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Posted 29 April 2011 - 05:27 PM

Once you install the KWA M130 please post the resulting FPS.  I for one would be interested. :gun:

#4 TheGreenLaser

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Posted 29 April 2011 - 06:58 PM

I installed the KWA M130 spring in my SR10. I was getting about 450fps with KSC .20 bbs. Which equates to about 410-415fps with .25s I believe.

Edited by TheGreenLaser, 29 April 2011 - 07:00 PM.


#5 gcw360

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Posted 29 April 2011 - 07:20 PM

View PostTheGreenLaser, on 29 April 2011 - 06:58 PM, said:

I installed the KWA M130 spring in my SR10. I was getting about 450fps with KSC .20 bbs. Which equates to about 410-415fps with .25s I believe.
Thanks.  That similar to the 464 I'm getting in my M4A1 with EdGI TBB 6.01.  The spring is a MADBULL SP120.  I get around 425 with KSC .25's and like 395-398 with .3 KSC's if my memory serves me.

#6 TheGreenLaser

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Posted 29 April 2011 - 08:24 PM

No problem... Yeah I ordered 2 of them when I saw them in the Pro Shop.

The SR10 is stock and I was surprised at the FPS gain over the KWA M120 spring. Waiting for the Edgi TBB to be restocked too :D

#7 Sloth

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Posted 04 May 2011 - 06:32 PM

View Postgcw360, on 29 April 2011 - 05:27 PM, said:

Once you install the KWA M130 please post the resulting FPS.  I for one would be interested. :gun:

lol, 450 FPS...stock everything except the spring.

Gonna see if we can weaken it down to 400-405 to get me "legal" for our games here. If not, I guess I'll be buying some M120 springs when they're available.


^ That's with .20 BBs of course. We have to chrono at 400 FPS with .20 around here.

Edited by Sloth, 04 May 2011 - 06:33 PM.





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