prologos is right...
if u wanna make this items into G11 Uniq then u have to edit A3 Client.exe and Zoneserver.Exe
by which u can use this weapons perfectly like G9.5 Uniqs
there is IT0.ull and IT0EX.ull files.. in which u can find this weapons
Start learning to add custom ASM code into ZoneServer before you jump into any big stuffs. I suggest you read this tutorial http://forum.ragezone.com/f860/win32-executable-asm-code-injection-981310/ and start your ZS editing journey. Inside ZoneServer folder you will find .map file using which you can find address value of each ZoneServer functions. Using the address value you can go to the exact line in OllyDbg and start investigating the ZoneServer. In later stages when you understand assembly code of a function, you use JMP statements to divert code flow to your custom code location and make it get executed!