It would appear that a few new offerings for Glock's MOS (Modular Optics System) for mounting reflex and red dot sights are in the pipeline, namely for the G17 and G19 models.
The MOS system made its debut at SHOT Show 2015 exactly a year ago and provides factory-original optics ready handguns in a number of models.
The MOS feature is currently available on four 4th Gen Glock models including the "Practical/Tactical" G34, G35, G41 and the new for 2015 10mm G40 long slide.
The MOS allows a user to mount a red-dot or other optic switching from sight to sight by using a series of adapter plates that are accepted into the common mount on the slide. The four different plate options work with EoTech, Docter, Insight, Meopta, Trijicon (RMR), C-More, and Leupold (Delta) among others.
Now, as reported by The Firearms Blog, there are three new sku's showing up for Glock distributors, 0252744 0252743, and 0252742, each denoting MOS variants of the Glock 17 and Glock 19. If you ask us, the two G17s are likely for the standard length model and a 17L, which would make sense.
Apparently these guns have been available in Europe for some time. TFB says since April of this year. This is verified by the Munich, Germany based Waffen-Centrale.de who is advertising MOS G17s for 819 Euros.
As sold in Germany...note the four plate MOS package.
They are already starting to show up online with retailers here in the states ($598 on sale) for a Glock 19 Gen 4 MOS 9mm 15 RDS 4.02" so you can expect this to get firmed up quick at the upcoming SHOT Show 2016 in just a couple weeks.