This photo was posted in a SCAR Owners Group. It is short barreled MK17 caliber converted to shoot 5.56×45. The weapon is used by US Army Rangers and was seen at a Rangers Open House.

The selector switch looks quite different to the MK17 and MK16 that i saw at the FN America Factory tour. If you notice below, the selector switch is different than the one above. Like on my semi auto SCAR17S, semi auto fire is only 45 degrees from safe. And on the MK17 and MK16 below, full auto is at the 12 O’clock position.