I know I sound like a total noob asking this but does a free float RAS rail wobble or are they really sturdy because I think "free float" and I instantly think its not supported on the barrel so it must be wobbly. Please reply to this stupid question. :?
Free float rails are very sturdy; on a real gun they are used to prevent extra vibration on the barrel and increase accuracy. They are more stable than a barrel supported RIS because it is a one piece construction that does not depend on any spring tension for stability.
Well, sort of.
A conventional rail system attaches between the standard barrel nut and the front handguard cap. When force is applied to accessories mounted on the rail, it exerts force onto the barrel, negatively affecting accuracy (in real guns).
A free float system attaches only at the front of the upper receiver, most of the time using a proprietary barrel nut, and allows the barrel to "free float" inside of the rail system. Any force exerted on the rail, is transfered straight back to the receiver.
For airsoft guns, there is probably little or no effect on accuracy - the advantage being it will be a bit more solid. Airsoft guns are made of lesser materials, and therefore the torque used on the barrel nuts is much lower most of the time, so barrels and rails can come loose after hard use. Keep an eye on them and re-torque as necessary.
Well designed rail systems like those from LaRue Tactical and Daniel Defense have incorporated features that prevent loosening of the rail and barrel, so long as it is installed properly. From what I've seen, the airsoft knock-offs of these rails incorporate these features. For best quality, though, buy the real thing.
And don't use an airsoft rail on a real gun or you'll be asking for trouble. :roll:
I hope that answers your original question.
