WE, following the current trends and developments in sport shooting, decided to release the MOS series of replicas of popular the pistols from Austria. The MOS abbreviation means Modular Optic System - a system that allows for mounting of micro collimators on a special mount milled on the gun's slide.

WE MOS models also have this option. In the photos of the replicas, in their boxes we can see the RMR collimator and various mounting plates, that allow for attaching sights with different bolt spacing.

According to the photos available on international forums, one of the differences in the internal mechanism is the different shape of the cylinder cover, which had to be redesigned in such a way as to allow the collimator to be mounted on the slide.

The available models are: G19X GEN5 MOS TAN/BK, G19 GEN4 MOS TAN/BK, G17 GEN4 MOS TAN/BK, G19 GEN3 MOS TAN/BK, G17 GEN3 MOS TAN/BK.

The pistols are available at kyairsoft.com from $90.99 to $93.00. 

Sources: kyairsoft.com, arniesairsoft.co.uk, gunbroker.com