[grand.Theft.Otto]

pawn Код:

// top of script

new IsLaVice[MAX_PLAYERS];

// in the function where it detects the player is a gang member, like your /joingang command for example

IsLaVice[playerid] = 1;

// in your /gangweapon command or something

if(IsLaVice[playerid] == 1)
{ 
     // give their weapons here
    // other stuff
    return 1;
}
else
{
    return SendClientMessage(playerid,color,"You aren't a gang member.");
}

Something like that.