Adding Optics to M1 Garand AEG

I'm interested in purchasing the following AEG:
ICS M1 Garand Full Size Airsoft AEG Rifle with Real Wood Stock (Model: Standard) | Evike.com

I'm wondering if you know of any ways I could mount an optic to it. Are there any picatinny rail brackets that would fit it? In general, I'm trying to avoid something as arduous as a M1C conversion.

Any advice or recommendations greatly appreciated!