When it comes down to it this is only about adding one cartridge and changing the name of the other. We've seen the screenshots of an SVD-type rifle (possibly a PSL) and we have a Mosin. Both of these are chambered for 7.62x54r, not 7.62x51. Hell, the 7.62x51 we have right now even comes in a box labeled 7.62x54r. This should be common sense, really. When they want to build and design a G3 or something I can understand the reintroduction of the 7.62x51 but for now with the only weapons in-game and on deck taking the Russian variant I don't see why whoever's responsible for writing names and descriptions just can't go and change a little number for us. Now onto the 5.45x39. The AK-74M would be a beautiful addition, having it's under barrel launcher and beautiful folding stock, then you have the 74 series in other classes such as the AKS-74u carbine and RPK-74. Mind you these are especially different from their M43 7.62x39 predecessors not just on the power of the cartridge but, especially with the AKS-74u, the design of the weapon. AKS-74u comes out much shorter than an AKMS (which basically could be had now in experimental with a folding stock) while having a higher rate of fire and less power. The alternative also stands for the RPK variant, if they don't go with "one or the other" comparatively the 74 version is scaled down in nearly all aspects but within some situations increased accuracy. The 5.45x39 also opens up the newer generation of Kalashnikov rifles as well, such as AEKs, AN-94s, and the AK-100 series. From an environmental standpoint an AKM is very much out of service with former Warsaw Pact regions and if it remains it's deep into the reserve forces. An AKM is more likely to be found in the hands of illegitimate users, or non-military, while a AK-74 variant is more likely to be lining the racks within a military facility. Would it hurt that much to have 3 intermediate (5.56x45, 5.45x39, 7.62x39) and 2 rifle (7.62x54, 7.62x51) cartridges?