[ViruZZzZ_ChiLLL]

You code is kinda hard to understand xD
Well heres a simple code (my version)

Code:

#define BannableGuns 38||GetPlayerWeapon(playerid) ==37||GetPlayerWeapon(playerid) ==36||GetPlayerWeapon(playerid) ==35||GetPlayerWeapon(playerid) ==39||GetPlayerWeapon(playerid) ==40

public OnPlayerUpdate(playerid)
 {
    if(GetPlayerWeapon(playerid) == BannableGuns)
     {
     SendClientMessage(playerid, Red, "Anti-cheat System : detects you spawning an innapropriate gun!");
	 ResetPlayerWeapons(playerid);
     }
     return 1;
}