Not sure what guys in AFG you're talking about, but my company loved them. Obviously we weren't the only ones to run Scar Heavies(17's), but in my experience...in AFG, we liked the 17's and we liked them enough to keep them for most of the battalion...and returned the Scar Lights(16's).no im not referring to this video. referring to dudes who used them in Afghanistan who had first hand experiences with them being Jam-O-Matics.
There were initial issues with both models, mainly the barrel change system. The only memory I have of any of them jamming with any regularity was the Scar Lights...and that was because of the crappy mags they came with. We switched to pmags and that seemed to work better, although the HK Steel mags ran the best.