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Old October 20th, 2009, 16:41   #20
EagleDriver
 
Join Date: Feb 2009
Location: Baltimore, MD USA
I have a CA M15A4 with the M110 Revolution gearbox. The Revolution comes with a motor, by the way, and if you were looking at a TW5, the Revolution gearbox is essentially the same.

You will definitely need a Systema metal hopup chamber, so that is a small additional expense. I only run my MAGPUL 120 round mags through it, so I don't know how it feeds with hicaps, but I am told it does not feed them well.

Semi auto is very fast, which is one reason I went with the Revolution. The other is weight, as I wanted a lighter M4 than the PTW.

Nice thing about the Revolution is that they are warrantied, and Zshot is very helpful when you need assistance (in the US anyways.)
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