Not according to the info I have. Colt is only switching back to Metalform since C-products went out of business. Just a month ago, Colts were still selling C-prod mags as their house brand and new Colt 9mm's are still being sold with C-prod mags.
And from what I have read, the only complaints were from guys specifically running either RRA lower purpose-built receivers or RRA inserts. The other brands did not seem to be as affected. Colt and RRA issued some sort of service bulleting about the mag inserts being position-sensitive with those products if I recall.
Now that being said, Metalform did have a better rep, but they don't make LAR-15 mags !
What I really want is a single-stack LAR15 mag to get it longer for grip and handling purposes, or one with a false-extension to at least a 5/20 length, but still take 10 rds.
This is by no means definitive but there are reports on the internet dating back to September that Metalform was once again the OEM supplier of Colt mags. Do believe that it was because of issues with the mags themselves that they got dropped. I have no experience with CProducts, initially I was excited about the prospect of some cheap 9mm mags (Colt mags were $200 in Canada back then) but stayed away because of the number of issues reported from the get go. Never had a problem with my Metalforms.
As for LAR 15 mags perhaps Questar should make some inquiries with Metalform. I could use a spare follower too.
