Ar-15 / Ar-10
Mossberg MVP in 5.56 & 7.62 (uses AR type mags)
Mossberg 500
Ruger 10/22,Standard MK1 MK2
G19/34
Ruger SBH/Redhawk Alaskan.
Good glass for everything that can use it. And the capability to roll your own rounds.
One should always keep in mind that the firearm you have
is more important than the one you wish you had.