This barrel is 21" long. It is about 1" longer than the air tube.

Jezzer, I have tried floating this barrel and it shot quite well, I was just concerned about all the weight and strain on the barrel tang and action. I do have a HFT500 that does have a floated barrel but it is a 14mm barrel with a 12mm tang and has three screws holding the barrel. Since the 16mm ba...

I have installed 16mm LW barrels on two S500's that I use for FT. IMHO the small 10mm tang (the part of the barrel in the receiver) does not provide enough support to float the barrel. I use barrel bands on both and see no reason not to.