Much has been posted recently about 5.56/.223 magazines and the tooling history. To include contracts. This my $.02 worth and I hope it helps clear up some confusion.
Okay Ind.....Universal Industries and Simmonds were divisions of Okay Ind. They produced magazines exclusively for Colts. They are now Okay Ind and the supplier to Colts and have a military contract. The tooling was originally built by Colts.
Center Ind.....Parson's was acquired by Adventure Line which was eventually purchased by Center Industries. They currently have the largest military contract in terms of volume. I believe the original tooling is Parson's.
D&H.....La Belle held a military contract and was the first to supply teflon finish magazines to the general public. They were acquired by General Stamping who was then purchased by D&H. They do not have a US military contract. Original tooling is La Belle.
Brownells.....Has been awarded a military contract.
Cooper and Sanchez are the other 2 companies that manufactured magazines. Cooper was the only company to ever lose a military contract for quality reasons. I do not know who built the tooling or were it is today. If anyone could fill in the blanks, that would be great.
CP