Update– Ruger has begun shipping the first retrofitted SR9 pistols and continues to send shipping boxes to customers on a weekly basis. A number of parts have been changed in the new design.
These parts include: The Trigger Assembly– A number of parts in the trigger assembly were replaced, but the trigger itself is most notable among them. Although the original design has a two-piece trigger, it was comprised of an inner and outer “shoe,” and the inner shoe was not visible. The new design incorporates a visible inner trigger of a blade design.
The redesign has had the desirable effect of reducing trigger overtravel. In addition, with the inner trigger blade depressed, the length-of-pull is noticeably reduced.
The Magazine Latches– magazine latches were changed on a rolling basis during production of the original design. Retrofitted pistols with the older latches will receive the newer version, which will allow them to work well with any SR9 magazine variation.
The Magazine Disconnect and Magazine Disconnect Spring have been replaced with different units.
The Striker Blocker and Striker Blocker Spring have been replaced with different units.