They were only made in modest numbers for a few years. The original idea was to generate sales to cash strapped governments as militia and 2nd tier weapons using some off the shelf M-16 parts. There was a basic model and at least prototypes of a 'HBar' sniper version. In the event, a few were sold to civilian retailers and there were no military or police sales that I ever heard of - not surprising with all the secondhand 7.62mm first generation military semi-autos in the international arms trade by that time, and the USSR handing out 1,000 AKs free for every Soviet adviser and KGB officer that any LDC agreed to take.
At the time, the competition for 'practical' type rifles was Armalon's heavily modified Remington PSS / VS rifles in 308 or 223 and the Parker-Hale 308 entries for the MoD British Army sniper rifle procurement exercise, the M85 and for more general law-enforcement / military sharpshooter use, the M87 in 308 or 300 Win Mag - fine rifles but expensive and not as slick operating as the CAM. The Southern Gun SSR-15 must have appeared not too long after the CAM and straight-pull AR-15s proved to be far more desirable to most potential customers.