Are you sure you don't have that backwards?
About Colt or the locks? Not sure on the locks, but just saying I've purchased several new CZs that didn't have a lock, my Buckmark and Hi Power didn't have one, don't think my Saiga 12 had one, M+M M10 didn't have one, etc. I thought I was told by someone at ATF that all used firearms should have some sort of a lock but....you know
If you really want a cable lock, I can ship you 10-15 of them no problem