My take from the article is that the military ordered 120,000 M4's and Remington got 24,000.
Probably not unusual when Colt can't produce the rifles quickly enough.
This was posted by EVR at AR15 and makes sense IMO:
"One of the main challenges to all AR/M16 new contract production is inability of potential manufacturers to actually make the quantities the contracts require. There really are not many makers in the US that can make 24,000 M16/M4-whatever model rifles. They have neither the tooling, nor facilities nor in-house expertise to expand and produce such numbers of guns. The Govt to its credit has expressed concern about all of these issues.
Pretty much all of the "big name" AR-makers cannot meet the contract requirements. Sure, they can make a few hundred of this or that, or even maybe a few thousand over time, but they simply do not have the capital to go forward with large contracts.
Enter Remington. Evidently the Govt believes Remington has the ability to tool, the expertise in-house to maintain and test and expand as well. It won't be easy for Remington, but at least they have the chance to comply. "