There was a period of time (earlier 2011) that LW had some quality issues with their products. These were primarily with barrels (feeding issues), but there were some problems with the slides as well.
The slide issues were primarily around the rear sight dovetail not being in the same place causing issues with installing RDS, and the balancing act between the dovetail and the safety plunger pocket.
This is entirely a non-functional issue and were it not for the fact i was installing RMR's it would have gone completely unnoticed.
The other problems that were less prominent but functionality affecting, were safety plungers sticking if pushed all the way in and a small ridge of metal causing the extractor to stick.
Both were quite fixable, and I have not seen any of this this subsequently.
FFL Type 07
"I have learned that wisdom can be as simple as substituting facts for assumptions."