Special thanks to Piotr Bojanowski of Poznan for assisting with information for this page.
The CK-6 is a red dot sight developed by PCO. It is unclear how far it progressed in testing and if it was formally adopted. Its outward form factor shares similarities with the EoTech's holographics family of sights which saw widespread service with the Polish military starting in the 2000s. The CK-6 made use of a proprietary 3.6v AA sized battery developed by PCO.
Images
With Polish soldier on Beryl rifle.
Possibly an early/developmental version of the CK-6, as it's shape is slightly different. Photo dates from 2009 or earlier.
VIDEOS
Video posted by Xunster showing the CK-6 used with a thermal sight.
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