Welcome to the forum.
With what you have copied from Bill G's posting above, you have the majority of the information currently known concerning this Model (922).
During the course of our research - we were only able to "view" either directly or from pictures, therefore the sampling is/was rather limited. At the time Bill wrote the above description, about 2003-04, he listed the KNOWN (at that time) serial number ranges.
Not surprisingly, new models, new variations and NEW INFO on serial numbers is almost constantly arising, especially on venues such as this forum.
The fact that your piece has s/n 120441, extends the serial number range for the 1st Variation downward by nearly 5000 digits. Because of this on going, evolving "discovery" process, Bill eliminated the s/n ranges for many of the Models, in his book. Instead, he notes specific serial numbers (many from my collection) that have the specified features for that Model and Variation.
Your 1st Mod. 1st Variation should look like the top example in the attached pic. AND - yes the front sights on this series was gold plated. Some examples are seen with gold filling extant in the barrel stamping.