4 pocket guns and two non-pocket guns*. In reality, only 5 get in the carry rotation, but #6 can be as it is sized like #5.
I didn't mean to have that many carry guns when I got started. It was due to trial and error of figuring out what fits into what clothing, and cartridge availability at the time. For instance, I have two .32 ACP pocket pistols thanks to the .380 ACP ammo drought several years ago.
* in order of purchase - Taurus 85UL, NAA Guardian .32 ACP, Taurus TCP732 .32 ACP, Glock 36, CZ75DPCR, and Remington RM380. The PCR is the optional #6 carry.