Dear Solarius
havin tryed the 1.6.4 verison i've noticed some inconguencies
1) Since there is an assault rifle there may be no need to include the vanilla one, also because share same ammo
2) In the ufopedia there are ak-47 and uzi but cannot buy them (!??!?!) but in the meantime there's a machine gun. My advice is: include ak and uzi, and assault rifle and smg may be improved verison on these weapons, to be researched and manufactured (basically a swap, kinda)
1) While there might be some truth to that I have found both rifles useful. I tend to mix the two and have a mix of them on my main troops. The AR is much better inside the UFOs, but worse at shooting outside at long range. Thus my AR guys tend to be the first ones in while the rifle guys cover them from farther back.
2) Those weapons are used by two new ingame factions that use mostly earth weapons. They start off much weaker then X-COM and are not much of a threat if you have good armour (with Personal Armour only RPGs and TNT are any threat to you unti they get advanced weapons). I think they are meant more as favouring to set the factions apart from X-Com.