The evolution of the Taurus Millennium and Millennium Pro
This article examines the differences in the 1st, 2nd and 3rd Series / Generation of the Taurus Millennium and Millennium Pro pistols. It gives some insight into how Taurus designs have evolved over time.

While I do love my PT-111 Pro (that’s 2nd series, stainless, full “Millennium Pro” scroll!), it does appear to me as if Taurus might be utilizing its unique position in the market to continually test and improve their design, effectively using their customers to beta-test and otherwise improve their product line. At least, I hope so: otherwise it’s just neurotic!
An interesting read even if you do not have a Taurus Millennium pistol.
More here.

bought a new Taurus Millenium Pro .40 3rd gen at a good price ($249). I took it to the range, shot it 19 times (2 9 round clips + 1 hand loaded into the barrel). as the weapon went into battery, it litterally fell apart in my hand. I called Taurus and was told, “we are closed for a few weeks, call back later. I called back a month later. They said ship us the pistol. I sent it in and waited. 4 months later, the pistol showed up. No paperwork, no documentation. No idea what they did to fix it. I took it to the gun shop and traded it for a Glock. I will never buy another Taurus.
In June of ‘09, I bought a Taurus PT111 Millieneum Pro. . After just a few, 25, rounds, the gun jammed and would not eject. I sent it to Taurus and they “repaired” it, where they included a target with 40 rounds shot for proof it worked. I took it out, jammed again AND the pin came out the back of the pistol!! Jamming would be the cause of my death, as in an exchange, one can’t say,” Wait, I have to unjam my weapon.” Deadman!Returned the gun for the third time. “Repaired” allegedly and “Firing Experts” signed off on it. Took it out again. After only 11 rounds it jammed twice, pin came out again, would not eject. This was at the end of January 2010! I went on for months weaponless, daling with their Customer (non) Service Dept.. I told them I did NOT wnat the weapon back but replaced. I HAD TO CALL THEM AGAIN to find out the status. Here’s the deal: We won’t have any of those models in for several weeks so fax us your receipt and we will refund you your money.” No further compensation, such as a case of bullets for all the ^$&^#%^@ I went through. Now, I have to go to a dealer and find another brand, which could cost me more, since I WILL NEVER BUY ANOTHER TAURUS AGAIN. Be advised that their current metal contents are NOT what they were say 3 years ago. They now manufacture cheap, unsafe, unreliable weapons. Be very careful when considering a Taurus!! JMF