Fixed machine guns (like Browing or Kord)

I suggest adding fixed machine guns, such as the American Browning 12.7mm, or the Russian NSV or Kord. The purpose was to leave them in a place where they would shoot from it, e.g. in defense. The advantage is higher damage, greater cadence and accuracy, the disadvantage is that the weapon is fixed and cannot be moved. In my opinion, this would be very useful for MW players, and it would greatly expand the possibilities of MW. And at the same time I suggest adding a Russian PKM machine gun, I miss it there, it would be an alternative for the M249.

Thanks for reading, and possible additions :D