Have you considered the SAI Optics SAI 6 1-6x24, available in 5.56 or 7.62.
"The SAI™ 6 series of optical sights provide a rugged and versatile solution for a variety of sighting requirements in variable magnification. With an LED-illuminated First Focal Plane reticle, ranging and ballistic hold-off is accurately achieved at any magnification. The proprietary Rapid Aiming Feature™ reticle and superior field of view enhance close-quarter effectiveness. The ruggedized tubular design allows for a variety of modular mounting solutions.

The SAI™ 6 series is designed to accommodate advanced optical sighting system enhancements such as flip covers, Anti-Reflection Devices, laser filters, and polarizers. SAI™6 series sights are designed for brilliant optical performance in rugged environments."

Doug @ Camera Land

[email protected]
http://www.cameralandny.com
516-217-1000

Thanks for the support.

[Linked Image from monstermuleys.com]