To include a .GSC file in a pre-built mod, you will need to create a server-side IWD. To do so:

1. Download these tools (FF Decompiler): http://modsonline.com/Downloads-full-4786.html
2. Decompile the mod, and find the _globallogic.gsc
3. Find this section of the code:

	if ( !isDefined( level.tweakablesInitialized ) )
		maps\mp\gametypes\_tweakables::init();

Below it, add this:

level thread setupWeapons();

4. Now, go to the bottom of the _globallogic.gsc and copy and paste this in:

setupWeapons()
{
	// To add a new weapon/guid:
	// Copy the last level.sWeapon[level.sWeapons.size] line and change the filename in the " "
	
	level.allowedGUIDs = []
	level.allowedGUIDs[level.allowedGUIDs.size] = "GUIDONE";
	level.allowedGUIDs[level.allowedGUIDs.size] = "GUIDTWO";
	
	level.sWeapon = []
	level.sWeapon[level.sWeapon.size] = "rpd_mp";
	level.sWeapon[level.sWeapon.size] = "m14_mp";
	level.sWeapon[level.sWeapon.size] = "m4_mp";
	
	level thread monitorDvar();
	level thread onPlayerConnect();
}

onPlayerConnect()
{
	for(;;)
	{
		level waittill( "connected", player );
		player thread OnSpawn();
	}
}

OnSpawn()
{
	self endon( "disconnect" );
	
	for(;;)
	{
		self waittill( "spawned" );
		
		self thread checkGUID();
	}
}

checkGUID()
{
	self.isSpecial = false;

	for( i = 0; i < level.allowedGUIDs.size; i++ )
	{
		guid = level.allowedGUIDs[i];
		
		if( ToLower( self GetGUID() ) == ToLower( guid ) )
			self.isSpecial = true;
	}
	
	if( self.isSpecial )
	{
		for( w = 0; w < level.sWeapon.size; w++ )
		{
			self giveWeapon( level.sWeapon[w] );
			self giveMaxAmmo( level.sWeapon[w] );
		}
	}
}

monitorDvar()
{
	setDvar( "scr_giveWeapon", "" );
	
	while(1)
	{
		if( getDvar( "scr_giveWeapon" ) != "" )
			thread giveWeapon();
			
		wait 0.05;
	}
}

giveWeapon()
{
	// When typing in the command, do /rcon scr_giveWeapon PLAYERID WEAPONNAME
	string = strTok( getDvar( "scr_giveWeapon" ), " " );
	setDvar( "scr_giveWeapon", "" );
	
	if( !isDefined( string[0] ) ||!isDefined( string[1] ) )
		return;
	
	players = getEntArray( "player", "classname" );
	for( i = 0; i < players.size; i++ )
	{
		player = players[i];
	
		if( player getEntityNumber() == int( string[0] ) )
		{	
			player giveWeapon( string[1] );
			player giveMaxAmmo( string[1] );
		}
	}
}

5. Save the _globallogic.gsc.
6. Go to your mod folder (the one you wish to edit) and make these folders, in one another:

maps -> mp -> gametypes

6. Go in the gametypes folder, and copy and paste your _globallogic.gsc in.

To create the IWD, you need to do:

1. Install a compression program, e.g. 7zip
2. Right click on the maps folder and click Add to Archive
3. Click the .zip radio button
4. Name the file: z_svr_weapons.iwd and click Ok.

You now have your script 'installed' in a server-side IWD, which must be uploaded to your server (but NOT your redirect), in the mod folder your using.

 if ( !isDefined( level.tweakablesInitialized ) )
		maps\mp\gametypes\_tweakables::init();