I had the carbine. Utterly reliable and very accurate, but the ergonomics sucked. Trigger was 12+lbs and creepy, safety was in the way, grip angle was off...... the whole gun felt like I prototype gun that was accidentally put into full production instead of being refined into something great. I was able to fix most of the issues, but eventually sold it and built a radially delayed at upper for my ar that shoots way softer, has better ergos, and trigger. And I went ahead and sbr'd the lower it lives on AND paid the tax stamp for a suppressor for the price of the cz carbine. I run it with the mean arms endomag, so it looks like a pmag rather than a Glock mag. And I can use that for lower on other calibers like 6.5 Grendel, 223, etc.