VHS stand for Višenamjerska Hrvatska Strojnica: multifunctional croatian rifle (or better volleyfiregun) and the main idea about it is precisely to develop a rifle in which you can attach a whole lotta of things on with rails or clip-ons without modify impairing its overall portability and ease to use (unlike m-4 SOPMOD for an example) and to adapt to the whole array of magazines and accessory on the market (that are the real reason of M-4 sussess in special forces community).
The latest news are directly from yesterday/s Split defence exhibition ASDA:
Surprise, surprise: it is not a version for export, it the definitive version with clip ons interchangeable carring handles.
Some examples:
G-36 style:
Carbine
Granade launcher (and bayonet).

(The lady is actual croatian prime minister, the man is Marko VUkotic itself i.e. XD and VHS daddy).
Famas style (standard for croatian army):
Grenade launcher:

Actually it is the version that needs more extensive changes as you have to remove the lower handguard and put it instead but also in this case it is a clip on accessory and you can still use the rail immediately above it, as in picture.
However the real yesterday novelty is there:
"Fat Joe": ( probably an integral laser pointer or rangefinder, for croatian future soldier programme):
Here in the end, the whole array together:
In this image you can argue because Croatian military stand forth for the "uncoll" Famas style handle: just count the sheer numbers of rail and accessories you can put on it.