Gunslinger Pre-Gen Restriction

[Dream Daemon]

I recently GMed my first PFS game and I have a question about the use of pre-gens. I printed all of the pre-gens before the game in case a player showed up with no character, but when it came down to offering the players (for a table of 3 people who all had characters) who they wanted to choose as the fourth member of their party, I left out the gunslinger. Not because of bias or hate on the class, but because I am unfamiliar with the weapon mechanics and how "grit" works and the details of the gun feats. I plan to read up on all of that one of these days, but I'm wondering if my action was "legal".

I did explain the above to the players, that I was leaving off the class because of my own ignorance, so they were aware that at a future table, that would be a choice. And they were fine with that, they actually wanted a rogue (I was kind of surprised they didn't pick a cleric).

I just wanted some thoughts and opinions if what I did was wrong. I'd imagine I am going to GM a few more games before I am familiar with the class, so I'd like to keep excluding the gunslinger until that time. Thanks in advance.

[Scribbling Rambler]

I don't think you did anything wrong here. You still provided your players with several pre-gen options.
However, I think you are missing an opportunity. The 1st-level pre-gen gunslinger (or samurai, or ninja) gives a very good run-down of the new class' abilities.
I'm not sure what type of venue you are running at, but the other problem you have is what happens if a player shows up with their own gunslinger. Under the rules, you should allow them to play that character. The good news is that the onus is on the player to provide you with all of the rules that you need to adjudicate the character, as it is not part of the Core Assumption.

Thanks for GMing!

[Enevhar Aldarion]

Like Neil said, the Advanced Player's Guide, Ultimate Magic and Ultimate Combat are all optional books. So if you do not own them, any players wanting to use stuff from them must provide their own physical copy, a legal pdf with viewing device, or printout from a legal pdf in order to legally use those books in your game. And if you do not own them, you are fully within your rights to only offer pre-gens of the Core Book characters as the NPC you would run in that situation.

[Dream Daemon]

Thank you VC Neil and Enevhar for your quick responses. I'm glad I didn't do anything super wrong and will do my best to familiarize myself with the gunslinger so I can better GM the game when one sits at my table.