Craig, your gun is a Unique Ejector System "G" gun as opposed to the earlier patent Self Acting Ejector "G" gun.

Just a word of causion, if you are considering a purchase make sure you look at the cocking and ejector mechanism very closely ( looks like someone has been at it) they are extremely difficult to get right again, needs to be worked on by someone who knows what they are doing...I speak from experience

Best

CJ

The taste of poor quality lingers long after the cheap price is forgotten.........