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CYMA CM.005 M4 CQB RAS Upgrade

Ex-Rnuw

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Can anyone give a list of parts/make to use on the above mentioned rifle?

I decided to have a look at the CYMA CM.005 M4 CQB RAS rifle and I was quite impressed how well made it felt, being a full metal build. I'd probably change the stock but I was looking at the internal side ie the barrel, motor etc. 

 
What do you specifically want to improve? Accuracy? Range? Trigger response? Rate of fire?

 
For the time being accuracy and range. 


You'll want to get a better hop rubber - personally I like the Prometheus purple one. You may need a better hop unit so you could do worse than one of the RA/SHS ones that @ak2m4 sells. You could also look at a better barrel, try the ZCI ones (again from @ak2m4 https://www.ak2m4.co.uk/internal-parts/inner-barrels/zci-inner-barrel-300mm)

There's actually a reasonable article in this months AI magazine that is all about updating a CYMA M4. Worth picking up a copy.

 
Those ZCI rotary ones are so much better than the SHS ones - better machining, better fitment of parts and cheaper also.  Only a couple more ZCI 300mm left in stock till my next order comes in April.  

 
You'll want to get a better hop rubber - personally I like the Prometheus purple one. You may need a better hop unit so you could do worse than one of the RA/SHS ones that @ak2m4 sells. You could also look at a better barrel, try the ZCI ones (again from @ak2m4 https://www.ak2m4.co.uk/internal-parts/inner-barrels/zci-inner-barrel-300mm)

There's actually a reasonable article in this months AI magazine that is all about updating a CYMA M4. Worth picking up a copy.
Nice one mate cheers. Hoofing. :)

 
Last edited by a moderator:
You'll want to get a better hop rubber - personally I like the Prometheus purple one. You may need a better hop unit so you could do worse than one of the RA/SHS ones that @ak2m4 sells. You could also look at a better barrel, try the ZCI ones (again from @ak2m4 https://www.ak2m4.co.uk/internal-parts/inner-barrels/zci-inner-barrel-300mm)

There's actually a reasonable article in this months AI magazine that is all about updating a CYMA M4. Worth picking up a copy.
Volume 13 issue 11 right? Hope so I've just ordered the mag haha

 
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