Gunbroker is great but as you've correctly noted, you need to do your homework to make sure what you want is legal in the People's Republik of Kalifornia. Make sure handguns meet the DOJ drop test requirements and call your FFL before you bid. Rifles are arguably a bit simpler but again you have to make sure you aren't in violation of any "assault weapon" restrictions or similar nonsense.
I've noticed that a LOT of sellers on GB simply say "no sales to CA", which I'm sure the DOJ and politicians are thrilled about and it's exactly what they want. But I've bought several from there - you just have to look and find people willing to work with you. Heck, if I lived out of state, I'd probably say "no sales to CA" too - it's a pain and a lot of potential headaches.
Another really good place to check is Calguns - since it's exclusively for CA, you can be pretty sure all the stuff sold there is legal (although again, check first).
I have the name of a REALLY good FFL guy in Redondo Beach if you want. Super nice, friendly and knowledgeable.
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Do I take it you're finally starting to believe there just miiiiiiiight be some "civil unrest" issues looming in the lovely city of angels?
