Notes: Sweden was Belgium’s first foreign customer of the MAG machinegun. At the time they were still using the 6.5mm Swedish Mauser cartridge in great quantities, and the MAGs they bought were modified to fire that ammunition. Later, they were modified back to fire 7.62mm NATO ammunition; however, the Ksp m/58 still retains the ability to fire 6.5mm ammunition through some parts changes. The Ksp m/58 is otherwise identical to the standard MAG machinegun.

In 2002, the Swedish Army decided to convert some of its Ksp m/58 inventory to the Ksp m/58D standard. The Ksp m/58D is essentially an "assault machinegun" version of the standard Ksp m/58, designed for use not only by some special operations troops but also by some mechanized infantry troops to make them easier to use in the firing ports of IFVs. The primary change is a large reduction in weight and a shorter barrel; the buttstock and fore-end have been replaced by more advanced (and lighter) composites), and the barrel is an extremely short 11.2 inches, along with a much more compact flash suppressor. The Ksp m/58D is intended only for limited issue and will not appear in large numbers in the Swedish Army. Oddly enough, the ability for the Ksp M/58D to be mounted on a tripod or pintle mount has been retained, though the usefulness of such a short-barreled weapon on a tripod is questionable.