[The_Moddler]

pawn Код:

public OnPlayerCommandText(playerid, cmdtext[])
{
    if(!strcmp(cmdtext, "/buygun", false))
    {
        if(!IsPlayerInRangeOfPoint(playerid, 3.5, /* your X, Y and Z goes here*/)) return SendClientMessage(playerid, 0xF0F0F0FF, "You are not in the black market!");
        {
            /* your buy gun code goes here */
        }
    }
    return 0;
}