I'm sorry Beretta fans, but I just think Taurus has constantly been the 1st to innovate the 92 leaving Beretta to follow.
For better or worst, Here's a list of innovations that Taurus has made to the 92 platform.
1. As built from 1980 to 1983, the Taurus-made PT 92 differed from the early-style Beretta Model 92 only in different slide markings and grips, and in the addition of vertical grooves on the front and rear gripstraps (Beretta had added such vertical grooves to its own Model 92 series pistols with the experimental Model 92S-1 in 1978 but did not standardize this feature until they introduced the Model 92SB in 1981).
2. Forjas Taurus showed still more innovation in 1982 when they introduced the PT 99, identical to the PT 92 except for being outfitted with an adjustable rear sight and matching higher front sight.
3. Not an innovation but a note in Taurus keeping the Condition 1 ability in the original Beretta design. Early sales were limited, as the Taurus PT 92, like the early Beretta Model 92, lacked a mechanical device for automatically uncocking the hammer. The necessity of using the trigger to lower the hammer, creating the possibility of an accidental shooting, sharply constricted the PT 92’s appeal to police and military forces.
(I believe practice & familiarity makes this issue nonexistent)
4. In 1991 Forjas Taurus changed the safety system yet again to allow a third position which would automatically decock the hammer when the shooter depressed the safety lever past the fire setting. Designated “PT 92AF-D” by the factory, Forjas Taurus improved this in 1992 by adding a small spring, about the size and shape of a paper clip, to the left-side safety lever. Retained by the left grip plate, this spring automatically resets the safety lever to its fire setting after the shooter depresses it to lower the hammer. This three-position manual safety/decocker has become standard on the Taurus PT 92 and PT 99 pistols ever since.
5. Another Forjas Taurus innovation dating from 1991 was the PT 92AF-S, which featured a stainless steel barrel and slide, atop an aluminum-alloy frame anodized a matching silver color. This predated Beretta’s own similar “Model 92 Inox” variant by almost a year.
6. In 2000 Forjas Taurus introduced a security key-lock system to the PT 92 series. Located in the rear gripstrap, this device locks the trigger mechanism until the owner releases it with a supplied special key
http://www.taurususa.com/newsreviews/HG2004_000.cfm