I read Calvin's thread below about the PSO scope he has on his SAR and the subsequent posts. However, my question is can a full length scope go on an SAR or should a compact one be used? I have a hard time seeing what the spent case ejection trajectory is and my wife has a hard time helping me determine it. I just don't want to put a full length scope on it just to find out the spent casings hit it such as is inherent with the SKS with a full length scope mounted on it. Also, if you go with a compact scope can you move it forward on the mount so the eye relief is proper? I might have to go with the stock extension Calvin mentioned in his thread but I have no idea where to pick one up that's that thick. Any help will be appreciated.