My everyday carry: Ruger LC9. Small 9mm with a 7 round mag (boooo), but it is easy to conceal
My bedside gun: Ruger P95, also in 9mm but much larger and holds a standard 15 round mag with one in the chamber (which there is!). I also have a couple of large 32 round mags for it as well.
My "defend the house at all cost" rifle: The Bushmaster AR-15. Have about 9 mags and just under a thousand of rounds.
My "the SHTF and I'm gonna have to use this gun for defense and hunting for the rest of my life" gun: My Ruger 10/22 with a standard 5x scope along with a
Gen 1 night vision. This and my wife's duplicate gun along with thousands and thousands of 22 rounds make this my long term survival solution. That and it is just fun to shoot!
The "we're experiencing a home invasion and have been caught flatfooted!" gun: A few here. A Ruger Mk III 22 and a Glock 19 9mm, both loaded and hidden in different places.
I have a few more I haven't mentioned and my wife has HER whole arsenal as well (although I already mentioned her Ruger 10/22.)