It's not new news. This is also one of the reasons I don't own anything made by Colt.
This was the 90's so it's going to be difficult to link you to some online source. It's pretty well known and Colt even stated they were no longer going to sell to civilians in order to focus on military and LE contracts as well as developing something called the 'smart gun' whatever the eff that is. I guess the 'smart gun' ended up being the semi-auto version of their rifles. lol
Forgot to mention Jer before the Assault weapons ban off '94 COLT voluntarily (no law enacted) made changes to their Colt Sporter (AR's) rifles with the sear block and other things, this was too try and appease the anti gunners with worries an AR could be easily converted to full auto by dropping in a M16 trigger set up.
After the Ban I remember the stop selling to civies because my dad thought his pre ban COLT HBAR was going to be worth a lot of money soon, COLT didn't stop selling to Civies for long though. Others stepped up and made better AR's.
If I remember right Connecticut had a stake in COLT for awhile as well, COLT almost went under a few times?
State's Big Stake in Colt Clouds Debate on Guns
I personally do not see why a COLT is better than anyone else's AR and to avoid a wishy washy manufacture over the course of the last 20 years I will take my money elsewhere thank you.