If you're looking for a red dot sight with a modern look, the Delta Armory Micro Red Dot Sight PRO with Riser should fit the bill. This red dot sight is styled after the real steel T1 micro red dot sight but with slight changes in the external design, including a canted illumination dial to reduce peripheral vision obstructions. The 20mm Picatinny mount is also integral, providing a stronger overall unit with the sacrifice that it cannot be used on T1 footprint mounts. 

The Micro Red Dot Sight PRO offers 11 brightness settings, making it ideal for both bright sunlight and gloomy CQB environments. Windage and elevation adjustment is provided by a pair of capped turrets, requiring a flathead screwdriver to apply adjustments. The set includes the sight itself and a 20mm Picatinny rail riser, meaning if you're running an M4 platform you don't need to source the riser separately so you can actually see down your sight. 

If you're looking for the cutting-edge micro red dot sight look for your primary, the Delta Armory Micro Red Dot Sight PRO with Riser is both affordable and effective!