one thing I immediately wonder is, why does nobody make a longer carbon fiber airgun cylinder? If you look at the Hatsan bully, FX impact, evanix x2 etc, those guns have so much room for a longer air tank...could those same diameter tanks not be made 40, 50, 60% longer? Is it an issue of limits of the material strength? It seems like an extended 800cc upgrade tank would be a hot seller and an easy retrofit to certain guns like the ones I mentioned above.