As others have stated, it is almost impossible to place value without clear photos from all angles. It is even better to examine the gun in person. Basically beyond what comes with the gun, box, papers, original cleaning kit and sight adjustment tool (screw driver) the next 3 criteria are condition, condition and condition.
Typically collectors pay the highest prices and if all of the elements above are present then the price reaches the top of the range. As these elements are missing then the price drops. Shooters are less concerned with many of these items and therefore typically won't pay the top prices in the range.
Hope that helps.