I simply wanted to run an old mod, that's all. the gem I'm referring to is WarBoy's mod I attached in my previous post.
The file you attached is fully functional, you can run it as is... you don't need OXCE.
If you want to have these features in OXCE, you can create these mods using the standard "ruleset modding" capability... if I read the list of features correctly, everything is doable in OXCE already... maybe except the flashbang grenade (we can't decrease detection radius, but all other things can be done).
Most of these mods are also already available as standalone mods (combat knife, sniper rifle, flamethrower, sentinel craft, new armors, training facility, medical facility, etc.) or as part of existing modpacks (FMP, area51, etc.).