First carry gun was my first handgun, acquired right after getting my concealed carry permit, i.e., a Ruger Speed Six.

Other handguns I've adopted over the years are several models of 1911, a Colt Government 380, a NAA Guardian in .32 ACP, a NAA Mini Revolver in .22 LR, a Sig P230 .380, a Sig P239 in .357 Sig, a Charter Arms Bulldog .44 Special, various J-Frame S&Ws, a Colt Detective Special, an S&W Model 13 (FBI configuration), a Glock 17, and a Glock 26, which is what I've been carrying for a couple of years now. I really like my new Glock 19 (Gen 5), too, and would be happy to carry it. Might do so at some point.

I think I covered all the handguns that I've carried for any significant period since 1980, which is when I got my permit.