Need some help with my CTW.

So i just bought a CTW from Evike, and the first thing im hoping for is that the model i have is actually an MX2, I heard that the only way to be sure is to check the SN so could someone that for sure has an MX2 give me there SN and then ill no for sure that mine is an MX2 if the number is higher.

Now onto to Nozzle problem, Although mine has not broken yet i would like to know if maybe the nozzles have been fixed in the MX2 or not and if not what i can do to prevent that from happening. Ive worked on tons of standard AEG GB's so im pretty familiar to how the internals work.

Last question, has anyone had any experience with these ACM cylinder units and if they are any good ? http://www.rsov.com/product.php?langId=1&currencyId=1&manufacturerId=10&prodId=13656&cateId=0

Thanks in advance for all the help in advance.

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Rest assured Young Jedi - the force is strong in your weapon, it is an MX-2 (the MX-1 didn't have the blue LED feature).

If you also remove the barrel it will be silver and not brass, and will most probably have the pressure vents cut in the end by the muzzle (again not on the MX-1).