Service is still par excellence with select U.S. corporations.
My early vintage (serial number begins with AA) NAA Guardian.32 ACP inappropriately dropped the mag recently (an old, well known issue with the mag release on the early AA and AB serial pistols), so I figured it was high time that I called the factory to arrange a fix. Historically, this problem was experienced mostly with the extended-capacity mags, and mags with the finger extensions; I only use standard mags so it took years for me to experience an unintended mag drop. I should have taken preventive action years ago, but I procrastinated. The fix is easy, painless, and free to the gun owner thanks to the generosity of North American Arms; they give you the needed part and even cover the postage.
I called NAA Customer Service during the morning of Wednesday September 10, 2014 and the replacement magazine release was in my mailbox today, Friday September 12, 2014. Faster than I could say “Thanks NAA!” and “Thanks U.S. Postal Service!” I had the old mag release out and the new one installed.
The new mag release does feel like it has a stronger spring and the pushbutton has more travel before the mag releases.
EDIT: Just how do you swap out the mag release on the NAA Guardian? It is the same as swapping one on the Colt Government Model.