Glock AR-15s seen in the hands of Slovakian police officers. These rifles appear to be the same model that was presented to the British Ranger Regiment for the Hunter Project trials, the GR-115F, albeit in black and sporting an aimpoint comp M5.
It's not surprising considering that Slovakia has a Glock manufacturing facility in Bratislava, in certain markets, the Slovakian proof marks and the "Made in EU, Assembled in Slovakia" are common sights in Glock handguns, like this 19 with the Lieskovec proof mark.
So far, Glock has been very hush hush about these rifles, but it seems that they were not a one off, there's also been some talk about a version without a third pin, this might be the one that the Slovakian Police has adopted.
Hopefully we'll be able to get our hands on one of these semi auto Glock Rifles soon.