I just got a sales catalog from AIM with some new .223/5.56 advertised. the headstamp has “M193” at 12:00 and “08” at 6:00. Looks to be brass-cased with a nickle primer and no visible cannelures. The ad says “NEW CENTURION BRAND 2008 PRODUCTION .223 AMMUNITION MANUFACTURED IN THE USA BY A DEPARTMENT OF DEFENSE CONTRACTOR.” Anyone know the origin of this stuff?
To add, I found a reference to “Centurion” rimfire ammo made by Aguila. Same company???