Hmmmm BBl length. Perhaps there more to this then one would think. Maybe it is the 1/24 scale and therefor shorter bbls that make the Vs guns develop higher fps then Heng Long. My Panzer III is the best performing Heng Long out of the bunch, and guess what, It has the shortest BBL.

There is really little difference between the Vs gus and the Heng long guns from what I can tell. I got the idea of shimming the spring from the VS gun and have done this on all my Heng long guns. This has helped improve the bunch, and I no longer have any duds.

I am actually quite happy with the Heng long guns now. I know they are pretty lame when compared to the pscartozzi scale, but are now good enough to break paintballs inside 20 ft which is all I ever wanted for tank battling. (Note angled armour works and have have had much trouble hitting another tank and having the things break,on anything other then a vertical surface, making the Tiger the best target tank!!!!!.)