In stock at Airsoft World is the Valken Tactical RDA30 30mm Reflex Red Dot Sight in tan colour... "With a heightened base, this sight provides a perfect view over your iron sights (so a bonus for all you M4 owners with the standard A-Post front sight out there :-) ).

With a standard RIS this mighty scope will fit all standard 20mm rails and a small rail on top to mount a mini red dot to get up close and personal."