M9 mag question

General Firearms Handguns - Semi Auto
1

http://www.gao.gov/decisions/bidpro/297313.pdf

Above is a GAO protest decision involving a contract for M9 magazines. I’ve heard of well-known vendors such as Mec-Gar, Checkmate (for better or worse), and Beretta OEM mags. PHT and Airtronic Services are new ones on me. Are/were their mags in US military service?

2

only ones i had in my arms room were about 10 Berreta OEM and around 300 Checkmate mags. Never used any other brands.