Porting is simple, contact the author and gain permission is the first step. Then remaking the .esp is the second step, then you are done. So I would suggest picking up the geck since I have seen almost that entire list on here. The M1, Thompson, and the bar are already in fallout, I have seen an STG-44 mod recently and added a sighting node for the author so that one works, Camon has made a few of these models already like the FG-42 and the Bren, pretty sure he also has an MG, the 20th century weapon pack will contain the rest. Modders are willing to do requests and add new weapons to the game but when someone requests weapons that have already been made you probably wont get many if any modders that are willing to fill that request since some other modder already went and built them. I will however link as many as I can find. - I built an M1 Carbine you can find it in my signature. (may not be on the list but it is a WW2 weapon) - Track down this machine and you will have your M1 - Track down the BAR from deadmoney - Track down the Thompson from Honest Hearts (also contains a .45 similar to a colt) - Mg-42 With outfit FG-42 Bren Lmg 20th century weapons pack - This one contains the rest but I notice it is currently under review so it will either eventually get removed or they will complete the review and it will be back up. There is a mosin nagant in the stalker weapons pack but I do not currently have a standalone. Until then there is this - Mosin Nagant and SKS STG-44 If you request anything that I feel like making then I will give it a shot.