[T_A_N_K]

Originally Posted by Patdod

Can I legally import this?

http://shop.ehobbyasia.com/gandp-spe...a2-m4-aeg.html

Yes

Do you know if ehobbyasia still use UPS as Express service? (I don't want to be screwed with extra fees UPS charges)

Why don't you ask them?

Can you explain me the differences between RIS and RAS system? (I would like people opinions between the two products)

They both function the same, however how they are attached is different.

Do you think the difference of prices is worth it? Is the silencer included actually working to make the guy quiet?

Suppressor's don't really work in airsoft, its mostly cosmetic, or people use them as tracer units. Its your money, is it worth it to you?

http://shop.ehobbyasia.com/gandp-m4-...or-m4-aeg.html

What would be the maximum lenght for inner barrel for each model?

Maximum length of the inner barrel is as long as you want it to be. Ideally you want something just short of the length of the OUTER Barrel.

I've never had an issue importing a "Silencer" but that doesn't mean you won't.