local function IsReallyValid(ent)
    return ent:IsValid() && ent.VehicleType == VEHICLE_TANK && (!SERVER || (ent:GetPhysicsObject():IsValid() && ent.HasParts))
end


function TOOL:LeftClick( trace )
    local ent = trace.Entity
    if(!IsReallyValid(ent)) then
        if(!ent:IsValid()) then return false end
        ent = ent:GetOwner()
        if(!IsReallyValid(ent)) then return false end
    end
    if(CLIENT) then return true end
    if(ValidEntity(ent.Tower)) then ent.Tower:SetBodygroup(1,self:GetClientNumber("turret")) end
    if(ValidEntity(ent.Barrel)) then ent.Barrel:SetBodygroup(1,self:GetClientNumber("gun")) end
    return true
end