Request: Support for P320/M18, FG 42; Updated support for Vanilla Mod Pack and SKS

Requesting support for the following firearms;

[P320/M18](https://modworkshop.net/mod/33336l)
[Fallschirmjägergewehr 42](https://modworkshop.net/mod/32676)

And updated support for the following;
[Vanilla Mod Pack](https://modworkshop.net/mod/24482)
[SKS](https://modworkshop.net/mod/17243)