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M4A1 vs M4A1 CQB


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#1 JACK1983

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Posted 26 October 2008 - 04:57 PM

I was just wondering, what are the internal differences between regular and CQB versions of M4A1? I know the CQB version was tuned down, but I'm mainly interested in the steps taken in the process of tuning down.

#2 Lt. Tony

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Posted 26 October 2008 - 08:01 PM

From what I gather I believe that only the spring was tuned down. From like a M120 equivalent to like maybe a M100 equivalent

#3 Stealthmaster14

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Posted 26 October 2008 - 08:11 PM

The M4A1 has an M120 and I believe the CQB has an M110.  That's the only thing different as far as the gearbox goes.

Edited by Stealthmaster14, 26 October 2008 - 08:11 PM.


#4 Guest_allizard_*

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Posted 26 October 2008 - 10:50 PM

That's incorrect.

M4A1 and CQB actually have the same M120 spring.  The only different is the cylinder.

#5 Stealthmaster14

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Posted 27 October 2008 - 07:58 AM

Oh really? Interesting. So how come the CQB usually has a higher rof? Or does it?

Edited by Stealthmaster14, 27 October 2008 - 08:00 AM.


#6 JACK1983

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Posted 27 October 2008 - 10:04 AM

OK now it makes sense. When it comes to the higher ROF, the CQB shoots faster mainly due to the fact, the opening on the side of the cylinder is located lower than on the regular M4 cylinder, therefore the piston is responsible for a smaller volume of air being pushed through. In this situation there is less strain being put on the spring and the whole system can work faster. For example, installing a Type0 cylinder( without any openings) would require the spring and the piston to push much more air through the nozzle and result in slower ROF.

#7 Lt. Tony

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Posted 27 October 2008 - 11:19 AM

The engineers at KWA are GENIUSES!

#8 Stealthmaster14

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Posted 27 October 2008 - 04:05 PM

Ha ha yeah




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