M-2,
The problem is that the Kahr warranty specifies "the original owner" or something like that.
S&W specifies the original owner.
The Taurus warranty specifies that the "gun" is warrantied against defects.
That is a big difference.
I verified all of the above with phone calls, but regardless of what is said on the phone, it is what is on paper that is the final answer.
Ruger and Glock have no stated warranty.
(I am not 100% sure on Glock, I would have to check at home, but I am pretty sure.)
I got used mags rebuilt by Glock, no questions asked.
I have had free parts mailed to my home by Ruger, no questions asked.
Kahr will probably work on your used gun for free.
If they ever decide to start checking records, or asking for proof of purchase, you are screwed.
At my dealer, the difference between new and used was about $60. While that is not pocket change, it was worth my peace of mind.
If you are not as paranoid as I am, buy the used Kahr and enjoy!
(Actually, I'm not really paranoid, I've just lived this life for 40+ years, and I have a fair idea how things go.
)