I've owned a SW1911SC stainless (slide) since '05.
I used it as a range beater and off-duty weapon. After a few years the plunger tube staking came loose at one end. Since it was an aluminum frame, I decided to let the factory handle the warranty repair. The work sheet accompanying the repaired gun came back stating they'd replaced the 'sideplate'.

Guess their pistol repair techs at Houlton were also the 3rd gen techs.
FWIW, for the sake of trivia, the extractor in the standard SW1911's were the same ones used in the .40 3rd gen guns. They made a Bar Go/No-Go gauge for armorers to use to fit extractors, but I was told by the factory that most extractors dropped into the SW1911's as their machining was continually being revised and improved. (Different .45 Bar gauge than the one used in the 3rd gen .45's, BTW.)
Kind of like how in the early M&P pistol armorer classes armorers there was a extractor Bar gauge for the .40 guns (first model released), to check the fit of the extractors in case fitting was needed. Then they decided that they weren't needed, as the tolerances made the extractors drop-in parts. When I was calling to ask about Bar gauges for other calibers (to fill out my armorer kits

), I was told they had no plans to offer extractor Bar gauges for the 9/.45 guns, as they simply weren't needed with the new tolerances and machining.
The 3rd gen .40 extractor had an additional beveled cut behind the hook, which was useful in the faster-cycling .40 guns.
Note the difference in the machining of the extractors in this pic. .45 on the left; .40 in the middle; and 9mm on the right. You can see the additional angled relief notch behind the hooks in the .40 extractors, compared to the others.
The SW1911E (Enhanced) guns used an extractor like that in the older PC .45's (think 945's), and used a different extractor pin and spring than the standard SW1911. The positioning of the taller PC extractor in the slide changed the engagement of the extractor relative to the case rim when it came to 'clocking'.
They eventually dropped offering the SW1911 armorer classes in their list of classes, from what I was told, so I don't know if the older armorer manual was ever updated, or what changes may have occurred over the years.
I still like my SW1911SC 5", though.
