252g (0.555lb) bracket

by GrabCAD
bracket weight 252g (0.555lb)
FEA: ANSYS structural
min SafetyFactor: 1.006
all three loading cases cleared.

printing direction as indicated in attached picture. this printing orientation will minimise support structures but i do not think it is the best printing direction:

printing the bracket on its side will reduce printing time and will increase part strength as the grain direction will be in favour of bending stresses, but as you seem to be most interested in minimising support structures i have not submitted it this way.