Quote:
Originally Posted by Brokenwings
First of all i have no idea what the difference is.
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RAS stands for Rail Accessory System and RIS stands for Rail Interface System. They are pretty much the same thing. RAS is a free float as opposed to RIS. Since RAS is connected straight to the receiver, it tends to be more stable than RIS, which is connected to the delta ring.
I think I got it right...