The S&W M&P45 would be an ideal pistol in CA, too bad it is no longer sold here. Likewise the S&W M&P9c was a good choice, as it actually runs fine with the neutered 10 rd mags, however it too is no longer sold in CA. Glock 26's are a good choice, as are G19's with the grip cut for G26 mags, at least till both drop off the "Safe Handgun" Roster at the end of this year and are no longer sold in CA. I am not a fan of the Sig P220, so I guess that leaves 1911's in flavors and some old revolvers...
Thank goodness I have a good supply of 9 mm Glocks and mags, as well as M&P45's...
For long guns, shotguns like 870's, 590's, M2's, 1301's, along with "friendly" rifles like M1 Garand's, M1A's, as well as various lever guns are all possibilities.