http://en.wikipedia.org/wiki/RGD-2

http://en.wikipedia.org/wiki/RGD-5

The RIB is also called RHIB (rigid-hulled inflatable boat). It has a stable, unflexibale hull and flexible tubes. This avoids the boat to sink, if a lot water comes into ti due to bad sea conditions.

Even a shot in a foot results in a instant kill in Infiltration. This was decided by the developers, as the big caliber of the sniper rifle would cause a serious damage even on smallest hits. Either because it will rip off a full body part (happens in RL often when using .50 caliber bullets) or it will result in a so called wound shock... even though the wound shock is to be discussed... at least a hit with a .50 bullet will cause serious wounds, so they decided to make it an insta kill.

http://en.wikipedia.org/wiki/RPG-7

The RPK-74 is newer version of the RPK machine gun. As the name displays, it was introduced in 1974 together with the "new" AK-74 rifle.Main difference is the different caliber and the slightly bigger ammo box: the RPK can hold 30 rounds in the box, the RPK-74 can hold 45 rounds.