Relatively small sized, light weight, high velocity military service cartridges like the ×39mm allow a soldier to carry more ammunition for the same weight compared with their larger and heavier predecessor cartridges, have favourable maximum point-blank range or "battle zero" characteristics and produce relatively low bolt thrust and free recoil impulse, favouring light weight arms design and automatic fire accuracy.  Tests measured the free recoil energy delivered by the ×39mm AK-74 rifle at J ( ft⋅lb), compared with J ( ft⋅lb) delivered by the ×39mm in the AKM. 
In one of Yuri's first major sales, he procures hundreds of surplus M16A2 rifles left in Lebanon by American peacekeepers, which he sells to the leader of a Lebanese Maronite militia (probably the real-life Phalange) in a joint deal with a corrupt American military officer named Lieutenant Colonel Southern (a reference to Lt. Colonel Oliver North, who in real life helped sell American-made weaponry "under the table" to proxy forces). While the M16A2 was introduced in the time era, it was not adopted or fielded until some time later, so the pile should be M16A1s .
The Kalashnikov AK-47 and its variants are the most widely used military rifles in the world. It has been put into service by more than 45 countries and seen action in every major military conflict since its creation in the late 1940s. While the overall design hasn’t changed significantly, many countries added their own unique tweaks to better fit their needs. In this article we will look at some of the most popular variants of the AK-47 and some of the lesser-known models as well. This guide can be used for identifying some of the less common models from around the world. We know you’d love to own the 20 AK-47 variants pictured here, but they’re owned by Kalashnikov Collectors Association member Stuart McDaniel.