CHECK OUT Seiarrea Pappa.com for goodies to make the carbine tougher.
They also remove the sight towers and replace all the plasctic internals which wear or break with steel.
Makes for a mean looking weapon which can shoot with the best of them.
Thanks to all who posted help and advice.
I think I shall stick with GOLD DOT bullets (Golden Saber uses them too ) but not the High Pressure rounds.