One of the manufacturers for the Reach armor has a slightly different name and I do not know if that is due to an error (typo) or if it has been officially changed. The manufacturer in question is the Beweglichkeitsrüstungsysteme. In Infinite, the name is slightly different, with Beweglichkeit being shortened to simply Beweglich. This discrepancy can be found in the UA/D0-06-FGM Tactical Kit chestpiece for the MARK V (B) armor core. I do not know if anyone else has noticed this but I wanted to bring this to the community, and hopefully 343i’s attention.
Perhaps its an in-universe change based on the company itself. Lot of stuff happened between the Fall of Reach and the end of the Human-Covenant War. (See; Chablys Defense loosing the Scorpion contract after Meridian was glassed)